1. Home Page
    2. /
  2. Entronix
https://www.ubuy.com.pl/en/deals/black-friday-deal-offers-sale

Delivery

Delivery time may vary depending on store and country. To learn more about Shipping Policy

Price Range

PLN
-

Shop Entronix Electronics Online in Poland

Sort by
|
Entronix Heavy Duty Case Compatible with iPhone 13 Pro, Hybrid Hard Cover, Navy Blue
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 13 Pro, Hybrid Hard Cover, Navy Blue

PLN 130

ENTRONIX Case Compatible with iPhone 11 Pro Max - Triple-Layer Heavy Duty Protection Black
US Store
ENTRONIX

ENTRONIX Case Compatible with iPhone 11 Pro Max - Triple-Layer Heavy Duty ...

PLN 99

10% OFF
iPhone 14 Clear Magnetic Case Compatible with Magsafe, [Yellow Resistant] Soft Tpu Cover Soft Silicone, Slim Thin fit Shockproof Protective Phone Case for iPhone 14 6.1 inch , Black
US Store
Entronix

iPhone 14 Clear Magnetic Case Compatible with Magsafe, [Yellow Resistant] Soft Tpu ...
4.9

PLN 108 120

Entronix Clear Case for iPhone 15 Pro Max, Shockproof Slim Fit Transparent Hard Cover
US Store
Entronix

Entronix Clear Case for iPhone 15 Pro Max, Shockproof Slim Fit Transparent Hard Cover
4.5

PLN 124

Apple Watch Case Series SE/ Series 6/5/4 for 40mm with Built-in Tempered Glass Screen Protector All Watch Series, Guard Bumper Full coverage Cover for Apple Watch Case, Color Black
US Store
Entronix

Apple Watch Case Series SE/ Series 6/5/4 for 40mm with Built-in Tempered Glass ...
3.6

PLN 109

Entronix Heavy Duty Case Compatible with iPhone 17e, Shockproof Dustproof Hard Cover, USA Flag
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 17e, Shockproof Dustproof Hard ...
4.9

PLN 127

Entronix Silicone Soft Case Designed for iPhone 15 Pro Max Shockproof Durable Slim Fit, Black
US Store
Entronix

Entronix Silicone Soft Case Designed for iPhone 15 Pro Max Shockproof Durable Slim ...
4.4

PLN 125

Silicone Case for iPhone 12 Pro Max -{Shock-Absorbent- Raised Edge Protection- Compatible with iPhone 12 Pro Max 6.7 inch} Aqua Blue
US Store
Entronix

Silicone Case for iPhone 12 Pro Max -{Shock-Absorbent- Raised Edge Protection- ...
4.4

PLN 125

Entronix Heavy Duty Clear Back Cover Cell Phone Case with Tempered Glass for Apple iPhone 11, Clear
US Store
Entronix

Entronix Heavy Duty Clear Back Cover Cell Phone Case with Tempered Glass for Apple ...

PLN 127

Entronix Silicone Case Compatible with iPhone 7 Plus / iPhone 8 Plus, Protective Cover, Olive Green
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 7 Plus / iPhone 8 Plus, Protective ...
4.7

PLN 125

Designed for iPhone 11 Heavy Duty Case, Protection Shockproof Dropproof Dustproof Anti-Scratch Phone Case Cover for iPhone 11, Blue
US Store
Entronix

Designed for iPhone 11 Heavy Duty Case, Protection Shockproof Dropproof Dustproof ...
4.9

PLN 123

Entronix Silicone Case for iPhone XR, Soft-Touch & Slim Protective Cover, Black
US Store
Entronix

Entronix Silicone Case for iPhone XR, Soft-Touch & Slim Protective Cover, Black
4.6

PLN 125

Entronix Clear Case Compatible with Galaxy S24 Ultra, Scratch-Resistant Hard Cover
US Store
Entronix

Entronix Clear Case Compatible with Galaxy S24 Ultra, Scratch-Resistant Hard Cover

PLN 125

7% OFF
iPhone 8 Plus Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter Resistant, [Tough Armour] Rugged Case Compatible for iPhone 8 Plus} Black
US Store
Entronix

iPhone 8 Plus Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter ...
4.5

PLN 124 134

Entronix Heavy Duty Case Compatible with Galaxy Note 9, Shockproof Hard Cover, Black
US Store
Entronix

Entronix Heavy Duty Case Compatible with Galaxy Note 9, Shockproof Hard Cover, Black
4.4

PLN 129

iPhone 12 Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter Resistant, [Tough Armour] Rugged Case Compatible for iPhone 12} Black
US Store
Entronix

iPhone 12 Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter Resistant, ...
4.4

PLN 120

Entronix Silicone Case Compatible with iPhone 17 Pro / iPhone 18 Pro, Protective Cover, Navy Blue
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 17 Pro / iPhone 18 Pro, Protective ...
4.3

PLN 125

5% OFF
Entronix Heavy Duty Case for Galaxy S23 Ultra Shockproof Triple Layer Rugged Case, Black
US Store
Entronix

Entronix Heavy Duty Case for Galaxy S23 Ultra Shockproof Triple Layer Rugged Case, ...
4

PLN 107 113

Entronix Wallet Case Compatible with iPhone 16E, Card Holder Flip Cover, Red
US Store
Entronix

Entronix Wallet Case Compatible with iPhone 16E, Card Holder Flip Cover, Red
4.9

PLN 127

6% OFF
Entronix Heavy Duty Case for iPhone 17 Pro Max and iPhone 18 Pro Max, Shockproof Hard Cover, Pink
US Store
Entronix

Entronix Heavy Duty Case for iPhone 17 Pro Max and iPhone 18 Pro Max, Shockproof ...
4.5

PLN 123 131

Entronix Silicone Case Compatible with iPhone Xs Max, Protective Cover, Aqua Blue
US Store
Entronix

Entronix Silicone Case Compatible with iPhone Xs Max, Protective Cover, Aqua Blue

PLN 125

Entronix Silicone Soft Case Designed for iPhone 11 Pro Shockproof Durable Slim Fit, COLORED
US Store
Entronix

Entronix Silicone Soft Case Designed for iPhone 11 Pro Shockproof Durable Slim Fit, ...
4.5

PLN 113

Entronix Silicone Case Designed for Apple iPhone 16 Pro Liquid Silicone Case, Shockproof Slim Case Built for Apple iPhone 16 Pro, Aqua
US Store
Entronix

Entronix Silicone Case Designed for Apple iPhone 16 Pro Liquid Silicone Case, ...
4.1

PLN 118

Entronix Silicone Case Compatible with iPhone 14, Protective Cover, Aqua Blue
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 14, Protective Cover, Aqua Blue
4.5

PLN 135

Entronix Silicone Case Designed for Apple iPhone 16 Pro Max Liquid Silicone Case, Shockproof Slim Case Built for Apple iPhone 16 Pro Max, Aqua
US Store
Entronix

Entronix Silicone Case Designed for Apple iPhone 16 Pro Max Liquid Silicone Case, ...
4.4

PLN 125

Entronix Silicone Case Compatible with iPhone 16 Plus, Soft-Touch Protective Cover, Aqua Blue
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 16 Plus, Soft-Touch Protective Cover, ...
4.5

PLN 114

Entronix Silicone Soft Case Designed for iPhone 15 Pro Max Shockproof Durable Slim Fit, Aqua
US Store
Entronix

Entronix Silicone Soft Case Designed for iPhone 15 Pro Max Shockproof Durable Slim ...
4.4

PLN 125

13% OFF
Entronix Silicone Soft Case for iPhone 13 Mini, Anti-Slip Durable Slim Fit Cover, Aqua
US Store
Entronix

Entronix Silicone Soft Case for iPhone 13 Mini, Anti-Slip Durable Slim Fit Cover, ...
4.3

PLN 88 101

Entronix Silicone Case Compatible with iPhone 16, Soft-Touch Protective Cover, Aqua Blue
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 16, Soft-Touch Protective Cover, Aqua ...
4.6

PLN 125

Entronix Wallet Case for iPhone iPhone 15 Pro Max, PU Leather [6 Slots] Card Holder Flip Stand, Red
US Store
Entronix

Entronix Wallet Case for iPhone iPhone 15 Pro Max, PU Leather [6 Slots] Card Holder ...
5

PLN 127

Entronix Silicone Soft Case for iPhone 8/7, Anti-Slip Durable Slim Fit Cover, Light Pink
US Store
Entronix

Entronix Silicone Soft Case for iPhone 8/7, Anti-Slip Durable Slim Fit Cover, Light ...
4.5

PLN 114

AirPods Pro 2nd Gen Case [Front LED Visible], Entronix Silicone Protective Shockproof Earbuds Case Cover Skin with Keychain Kit Set Compatible for Apple AirPods Pro 2nd Generation Green
US Store
Entronix

AirPods Pro 2nd Gen Case [Front LED Visible], Entronix Silicone Protective ...
4

PLN 115

Entronix Screen Protector Compatible with Galaxy S22 Ultra, Privacy Tempered Glass, 3-Pack
US Store
Entronix

Entronix Screen Protector Compatible with Galaxy S22 Ultra, Privacy Tempered Glass, ...
2.8

PLN 135

[2-Pack] For Rear Camera Lens of iPhone 12 Pro Tempered Glass Screen Protector, 9H, Anti-Scratch, Anti-Bubble, Anti-Fingerprint By NoCaze {Compatible for iPhone 12 Pro}
US Store
Entronix

[2-Pack] For Rear Camera Lens of iPhone 12 Pro Tempered Glass Screen Protector, 9H, ...
4.3

PLN 109

18% OFF
Entronix Heavy Duty Case Compatible with iPhone 11, Hybrid Hard Cover, Black
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 11, Hybrid Hard Cover, Black
4.8

PLN 107 130

7% OFF
Entronix Protective Cover Compatible with AirPods Pro 3rd Gen LED Visible Soft-Touch Silicone Earbuds Case Skin with Keychain, Red
US Store
Entronix

Entronix Protective Cover Compatible with AirPods Pro 3rd Gen LED Visible ...

PLN 113 122

Entronix Magnetic Clear Case Compatible with iPhone 17 Pro Max / iPhone 18 Pro Max, Soft Edges Transparent Cover, Pink
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 17 Pro Max / iPhone 18 Pro Max, ...

PLN 130

Designed for iPhone 11 Silicone Case, Protection Shockproof Dustproof Anti-Scratch Phone Case Cover for iPhone 11, Liquid Silicone Phone Case Red
US Store
Entronix

Designed for iPhone 11 Silicone Case, Protection Shockproof Dustproof Anti-Scratch ...
4.5

PLN 114

19% OFF
Entronix Silicone Case Compatible with iPhone X & iPhone XS, Protective Cover, Green
US Store
Entronix

Entronix Silicone Case Compatible with iPhone X & iPhone XS, Protective Cover, Green
4.3

PLN 88 109

Entronix Heavy Duty Case Compatible with iPhone 14 Pro Max, Liquid Glitter Back Cover, Rose Gold
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 14 Pro Max, Liquid Glitter Back ...
4.8

PLN 134

Entronix Rugged Heavy Duty Case for iPhone 17 Triple-Layer Protective Bumper Cover, Navy
US Store
Entronix

Entronix Rugged Heavy Duty Case for iPhone 17 Triple-Layer Protective Bumper ...
4.4

PLN 127

Entronix Heavy Duty Case Designed for iPhone 13 Mini, Shockproof Triple Layer Rugged Case Grey
US Store
Entronix

Entronix Heavy Duty Case Designed for iPhone 13 Mini, Shockproof Triple Layer ...
4

PLN 125

Entronix Clear Case Compatible with iPhone 13, Scratch-Resistant Hard Cover
US Store
Entronix

Entronix Clear Case Compatible with iPhone 13, Scratch-Resistant Hard Cover

PLN 125

Entronix Heavy Duty Case Designed for iPhone XR, Shockproof Hard Cover, Black
US Store
Entronix

Entronix Heavy Duty Case Designed for iPhone XR, Shockproof Hard Cover, Black
4.5

PLN 130

Entronix Heavy Duty Rugged Case for iPhone 11 Shockproof Dustproof Durable Cover, Camo
US Store
Entronix

Entronix Heavy Duty Rugged Case for iPhone 11 Shockproof Dustproof Durable Cover, ...
4.5

PLN 130

5% OFF
Entronix Heavy Duty Case Designed for iPhone 11 Shockproof Triple Layer Rugged Case, Pink
US Store
Entronix

Entronix Heavy Duty Case Designed for iPhone 11 Shockproof Triple Layer Rugged ...
4.5

PLN 113 119

Entronix Screen Protector Compatible with Galaxy S10 Plus, Clear Tempered Glass, 2-Pack
US Store
Entronix

Entronix Screen Protector Compatible with Galaxy S10 Plus, Clear Tempered Glass, ...
3.7

PLN 114

16% OFF
Entronix Heavy Duty Case Designed for iPhone 11 Shockproof Triple Layer Rugged Case, Teal
US Store
Entronix

Entronix Heavy Duty Case Designed for iPhone 11 Shockproof Triple Layer Rugged ...
4.5

PLN 113 134

16% OFF
Entronix Magnetic Clear Case Compatible with iPhone 17 Pro and iPhone 18 Pro, Hard Back Cover
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 17 Pro and iPhone 18 Pro, Hard ...

PLN 109 129

iPhone 12 Mini Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter Resistant, [Tough Armour] Rugged Case Compatible for iPhone 12 Mini} Red
US Store
Entronix

iPhone 12 Mini Heavy Duty Case {Shock Proof Case with 3 Layer Rubber, Shatter ...
4.3

PLN 118

Entronix Magnetic Phone Case Compatible with iPhone XS Max Transparent [Hard Back] Slim Clear Cover
US Store
Entronix

Entronix Magnetic Phone Case Compatible with iPhone XS Max Transparent [Hard ...
4.2

PLN 128

Entronix Screen Protector Compatible with Galaxy S22 Ultra, Clear Tempered Glass, 2-Pack
US Store
Entronix

Entronix Screen Protector Compatible with Galaxy S22 Ultra, Clear Tempered Glass, ...
3.4

PLN 114

Entronix Magnetic Clear Case Compatible with iPhone 12 Mini, Hard Back Cover
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 12 Mini, Hard Back Cover
3.2

PLN 125

Entronix Heavy Duty Case Designed for iPhone 12 Mini, Shockproof Hard Cover, Black
US Store
Entronix

Entronix Heavy Duty Case Designed for iPhone 12 Mini, Shockproof Hard Cover, Black
4.3

PLN 118

Entronix Magnetic Clear Case Compatible with iPhone 13, Soft Edges Transparent Cover, Black
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 13, Soft Edges Transparent ...
4.2

PLN 107

Entronix Clear Case Compatible with iPhone 15 Pro Max, Shockproof Hard Cover
US Store
Entronix

Entronix Clear Case Compatible with iPhone 15 Pro Max, Shockproof Hard Cover

PLN 114

Compatible with iPhone 11 Clear Glitter Case, Hybrid Protective Phone Case Slim Transparent Anti-Scratch Shock Absorption Bumper Cover for iPhone 11 6.1 inch 2019, Glitter
US Store
Entronix

Compatible with iPhone 11 Clear Glitter Case, Hybrid Protective Phone Case Slim ...
4.2

PLN 130

Entronix Silicone Case Compatible with iPhone 17 Pro and iPhone 18 Pro, Protective Cover, Black
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 17 Pro and iPhone 18 Pro, Protective ...
4.6

PLN 125

Entronix Heavy Duty Case Compatible with iPhone 17 Pro Max and iPhone 18 Pro Max, Shockproof Hard Cover, Orange
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 17 Pro Max and iPhone 18 Pro Max, ...
4.5

PLN 122

Entronix Heavy Duty Case Compatible with iPhone 16E, Liquid Glitter Back Cover, Rose
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 16E, Liquid Glitter Back Cover, Rose
4.7

PLN 127

Entronix Heavy Duty Case for iPhone X & iPhone XS, Slim Hard Cover, Black
US Store
Entronix

Entronix Heavy Duty Case for iPhone X & iPhone XS, Slim Hard Cover, Black
4.7

PLN 135

Entronix Heavy Duty Case Compatible with iPhone 14 Pro Max, Liquid Glitter Back Cover, Blue
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 14 Pro Max, Liquid Glitter Back ...
4.8

PLN 134

Entronix Silicone Case Compatible with iPhone 11, Protective Cover, Green
US Store
Entronix

Entronix Silicone Case Compatible with iPhone 11, Protective Cover, Green
4.5

PLN 123

Entronix Heavy Duty Case Compatible with iPhone 11, Liquid Glitter Back Cover, Rose Gold
US Store
Entronix

Entronix Heavy Duty Case Compatible with iPhone 11, Liquid Glitter Back Cover, Rose ...
4

PLN 138

6% OFF
Entronix Magnetic Clear Case Compatible with iPhone 14, Hard Back Cover
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 14, Hard Back Cover
4.7

PLN 117 125

Entronix Screen Protector Compatible with Pixel 8 Pro, Clear Tempered Glass, 3-Pack
US Store
Entronix

Entronix Screen Protector Compatible with Pixel 8 Pro, Clear Tempered Glass, 3-Pack
4.5

PLN 129

Entronix Silicone Soft Case Designed for iPhone 7/8 Shockproof Durable Slim Fit, Hot Pink
US Store
Entronix

Entronix Silicone Soft Case Designed for iPhone 7/8 Shockproof Durable Slim Fit, ...
4.5

PLN 113

Entronix Rugged Heavy Duty Case for iPhone 17 Triple-Layer Protective Bumper Cover, Black
US Store
Entronix

Entronix Rugged Heavy Duty Case for iPhone 17 Triple-Layer Protective Bumper ...
4.4

PLN 119

Entronix Magnetic Clear Case Compatible with iPhone 16 Pro Max, Heavy Duty Rugged Cover
US Store
Entronix

Entronix Magnetic Clear Case Compatible with iPhone 16 Pro Max, Heavy Duty Rugged ...
5

PLN 125

Brands Similar to Entronix

Belkin
Anker
UGREEN
Aukey
AmazonBasics

All You Need to Know About Entronix – Top Picks & More

Entronix is a distinguished global leader in electronics, specializing in innovative tech solutions that cater to a broad spectrum of consumer needs. Established with a vision of enhancing connectivity and convenience, Entronix is well-known for producing high-quality products, including cables, adapters, and chargers that are trusted by millions around the world. The brand's commitment to research and development has led to cutting-edge innovations that not only meet the latest technological demands but also prioritize user experience. With a presence in various countries, Entronix ensures that consumers have access to reliable and efficient electronics that enhance their digital lifestyles. Driven by customer trust and satisfaction, Entronix continuously strives to exceed expectations and provides solutions that are both durable and technologically advanced. Whether in personal or professional settings, Entronix products stand out due to their superior performance and exceptional quality, making them a go-to choice among tech enthusiasts and everyday users alike.

Why Buy From Ubuy

  • Authenticity Assurance: Our Entronix products are sourced from verified global suppliers and come with the original brand packaging and labeling, ensuring their authenticity.
  • Speedy Delivery: Experience fast delivery services, bringing Entronix products from global warehouses right to your doorstep in Poland.
  • Exclusive Global Selection: With Ubuy, you gain access to a vast selection of Entronix products not easily found in local stores.
  • Competitive Global Pricing: Ubuy brings you Entronix products at prices that leverage the benefits of international pricing, ensuring you save more.
  • Responsive Customer Service: Our dedicated support team is always ready to assist you with any queries regarding Entronix products, delivery times, or order process.
  • Effortless Shopping Experience: Enjoy a seamless shopping experience with our easy ordering process and secure checkout when purchasing Entronix products.

Top Offerings from Entronix to Try in Poland

  • Cables – HDMI Cables, USB Cables, Ethernet Cables
  • Adapters – HDMI Adapters, USB Adapters, Power Adapters
  • Chargers – Wall Chargers, Car Chargers, Wireless Chargers
  • Accessories – Phone Cases, Screen Protectors, Earphones
  • Networking – Routers, Switches, Modems

High Rated Products of Entronix

  • Entronix Ultra-HD HDMI Cable

    The Entronix Ultra-HD HDMI Cable is designed for superior performance, supporting 4K resolution at 60Hz. Ideal for gaming and high-definition streaming, this cable provides crystal-clear picture quality and immersive sound. The durable build ensures a long lifespan, making it a perfect addition to your home entertainment setup.

  • Entronix Dual USB Wall Charger

    Charge multiple devices simultaneously with the Entronix Dual USB Wall Charger. Featuring fast charging technology, it delivers optimal power to your devices to minimize downtime. Compact and lightweight, it’s ideal for home, office, or travel, ensuring your gadgets are always ready to go.

  • Entronix 3-in-1 Charging Cable

    The Entronix 3-in-1 Charging Cable is a versatile solution for all your charging needs, compatible with multiple devices including smartphones and tablets. Its durable construction ensures reliability, while the tangle-free design makes it easy to use on the go. Stay connected without the clutter.

  • Entronix Ethernet Cable

    Ensure lightning-fast internet speeds with the Entronix Ethernet Cable, engineered for optimal connectivity in both home and office environments. With a robust design that minimizes interference, this cable is perfect for gaming and streaming, providing uninterrupted online experiences.

  • Entronix Wireless Charger

    Experience hassle-free charging with the Entronix Wireless Charger, designed to deliver efficient charging without the need for cables. Its sleek design complements any space, while smart charging technology ensures your devices charge safely and quickly. Perfect for at home or in the office.

Commonly Asked Questions

  • What types of cables does Entronix offer?

    Entronix provides a wide range of cables including HDMI, USB, and Ethernet cables, catering to various connectivity needs. Each cable is designed for durability and optimal performance, ensuring excellent reliability for both personal and professional use.

  • Are Entronix chargers compatible with all devices?

    Yes, Entronix chargers are designed to be compatible with a wide range of devices, including smartphones, tablets, and laptops. They feature advanced technology to deliver the appropriate power needed for different devices.

  • How can I verify that the Entronix products I bought are genuine?

    Entronix products sold on Ubuy should come with the brand's packaging and labeling. Be sure to purchase only from Ubuy or verified sellers. In case of doubts you can contact our customer support and clear it before placing an order.

  • What are some top-selling products from Entronix?

    Some of the top-selling products from Entronix include the Ultra-HD HDMI Cable, Dual USB Wall Charger, 3-in-1 Charging Cable, Ethernet Cable, and Wireless Charger. Each product is designed for high quality and performance to meet consumer needs.

  • How fast can I get Entronix products shipped to my location?

    Shipping times for Entronix products can vary based on your location and the shipping method selected at checkout. Typically, Ubuy offers various delivery options to ensure you receive your products in a timely manner.

  • Is Entronix available for international shipping?

    Yes, Entronix products are available for international shipping through Ubuy, allowing customers in various countries to enjoy the innovative solutions offered by the brand.

  • What should I consider when choosing the right Entronix adapter?

    When choosing an Entronix adapter, consider compatibility with your devices, the type of connection needed (e.g., HDMI, USB), and the output power to ensure optimal performance. Viewing product specifications can help you make an informed decision.

  • Can I buy Entronix products from Ubuy if I'm in my country?

    Yes, Ubuy allows customers in your country to purchase Entronix products, providing access to a wide variety of their items with convenient shipping options.