CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator
CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator

CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator

$189.00 $179.99
*The keyboard is best charged through the computer interface. The use of high-power current and fast charging interfaces is prohibited.

Type-C Wired, Bluetooth & 2.4GHz Available

The CoolKiller CK75 supports Triple modes of wireless and wired connection. You can easily connect the keyboard to your devices with a wired cable, 2.4G wireless, or Bluetooth 5.1 connection. The keyboard comes with a 2.4gHz wireless dongle and coiled keyboard cable.

Full Acrylic 75% Hot-swappable Keyboard

The CK75 is a hot-swappable mechanical keyboard with a solid transparent acrylic case. It not only has a beautiful unique design and also delivers a premium solid feeling. The keyboard features south-facing LEDs and is fully hot-swappable with 3-pin or 5-pin mechanical switches. With the CK75, you can easily swap your stock switches for any other colored or MX-style switches with no soldering required.

Gasket Mounted Mechanical Keyboard

The CK75 takes high-quality gasket structures. The keyboard adds a poron foam switch pad and a sound-absorbing silicone pad on the top and bottom edges of the board and PCBA. High-quality gaskets and silicone in gasket-mounted keyboards absorb the impact of each key, creating a smoother, cleaner, and more flexible typing experience.  

Large Battery Capacity & South-facing RGB Backlights

The CoolKiller CK75 features a variety of default RGB effects that you can easily change it. South-facing PCB can make the keyboard RGB smoother and brighter. The compatible software is available for those who love more DIY settings. Built-in 3750mAh battery, the CK75 lasts for 25 hours with full lights on and 90 hours when no RGB.

2-Layer Transparent Keycaps KSA Profile

The CK75 designed their keycaps with 2 layers to achieve both a premium typing experience and a translucent appearance. The typing layer is made with high-quality double-shot PBT, which is more durable and oil-resistant. Dye sub-manufacturing ensures the colorful legends are clear and anti-fading. The KSA profile of keycaps offers an ergonomic typing angle and height, suitable for both gamers and typists.

2 in 1 Wired Numeric Keyboard & Mechanical Calculator

The numpad can be used as both mechanical numeric keyboard and calculator. The package come with a keyboard cable. When you plug the cable into your keyboard and device, it can work as mechanical numpad. If you take off the cable, it is a 18 keys portable transparent mechanical calculator.

Hot Swappable Mechanical Calculator

The CoolKiller calculator is hot-swappable mechanical calculator with custom ice linear switches. Fully hot-swappable with 3 or 5-pin mechanical switches, you can DIY your calculator and swap out the stock switches for any other color or MX-style switches without any soldering required. The finger tactile bump and the unique audible click are addictive.

 

Return and exchange of non-quality problems, customers need to bear the freight

*The keyboard is best charged through the computer interface. The use of high-power current and fast charging interfaces is prohibited.

Type: Keyboard

Keyboard

Switch: Ice Blade Switch-Tactile

Ice Blade Switch-Tactile
Shipped out within 2 workdays
1-Year warranty

CoolKiller CK75 & CK21, Wireless Transparent Gasket RGB Custom Mechanical Keyboard & Calculator

Premium Typing & Productivity Set

  • CK75 Mechanical Keyboard ×1 
  • CK21 Mechanical Calculator ×1
  • 4x Trial Switches (Test different feels)
  • 1x Extra Keycap Set (For personalization)
  • 1x Coiled USB-C Cable (Durable & tangle-free)
  • 1x Spacebar Silicone Pad (Reduces noise)
  • 2x Dual-Ended Keycap/Pullers
  • 1x Spare Data Cable
  • 1x Gift-Ready Color Box

Compact & Ergonomic Design

CK75 Keyboard: 329mm (12.95") x 145mm (5.71") x 28mm (1.10")

CK21 Calculator: 143.7mm (5.66") x 97mm (3.82") x 15mm (0.59")

Space-Saving– Keyboard’s 329mm length fits tight desks; calculator adds minimal bulk.
Comfort-Tuned– 28mm front height reduces wrist strain during long sessions.
Portable– Combined weight under 1.2kg, ideal for mobile setups.

Performance Meets Personalization

  • CK75 Keyboard’s Advanced RGB Customization

  • Fully Programmable Lighting: Design unique lighting effects via software (wired mode required).

User Manual

Customer Reviews

Based on 6 reviews
83%
(5)
17%
(1)
0%
(0)
0%
(0)
0%
(0)
E
Ethan Rivera
Awesome!

It’s super cool and stylish (๑•̀ㅂ•́)و✧

M
Megan Foster
Stunning Keyboard

This keyboard is absolutely stunning—I really love it! Typing on it sounds so pleasant too 😁

C
Chloe Ramirez
An Icy Dream Come True

The CK Polar Bear is absolutely stunning—it feels like it was made just for me. It’s as clear as ice, and the typing sound is crisp like ice cubes clinking together. Typing on it is pure enjoyment. With customizable lighting and the ability to DIY a new color every day, it feels like owning several keyboards in one. Even the aviator cable lights up! Totally worth the price—I’m completely in love. I’ll definitely come back if I need another one. Five stars! Also, shipping was super fast.

T
Tyler Nguyen
Gorgeous Keyboard

The keyboard looks absolutely amazing, and the typing experience is fantastic too!!!

T
Thierry Schild
Decent Stock keyboard

The keyboard looks gorgeous! The gaskets dont do much since the keyboard is so stuffed. The stabilizers could be better and it would be better, if you could easily open the board and put in screw in stabilizers. If the case stays like this plate mounted stabilizers are a good choice but the wire feels very cheap. The switches are a bit pingy probably caused by the spring. If you lube the switches it should be better. The switches sound very deep (very pleasant in my opinion besides the spring ping). The plate is like a mirror witch looks gorgeous in combination with the rbg.

Shipping Info

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We ship most orders within 24-48 hours.

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