CoolKiller CK21 Mechanical Number Pad with Calculator, 2-in-1 Wired Numeric Keypad, Hot-Swappable 18 Keys, Transparent Backlit Numpad, Rechargeable for Laptop, PC, Desktop (Ice Blade Linear Switch)

Product Description:Brand: CoolKillerKeys: 18 KeysProduct Name: CoolKiller CK21 2-in-1 Numpad CalculatorStructure: Gasket MountKeyboard Type: Wired Mechanical Numpad / Standalone CalculatorSwitch: Custom Ice Linear SwitchesBacklight: White LEDInterface: Type-C (Detachable)Connections: Wired / Standalone (Battery Powered)Hot Swappable: Yes (3-pin & 5-pin Compatible)Battery: 1500mAh Rechargeable BatterySize: 90*135*30mm (approx.)Weight: 210g (approx.)Support System: Windows, macOS, LinuxPackage Included:1*CoolKiller CK21 Numpad1*Type-C Cable1*User ManualEnhance your workflow with the CoolKiller CK21—precision meets style.2-in-1 Functionality:Use it as a wired mechanical numpad or unplug it and switch to calculator mode—perfect for financial work, spreadsheets, or quick math.Premium Gasket Mount:Equipped with top and bottom silicone gaskets, CK21 provides soft rebound and a satisfying typing feel with every keystroke.Hot-Swappable Flexibility:Customize your typing experience by swapping out switches without soldering. Compatible with most MX-style switches.Crystal-Clear Design:Transparent keycaps and LED backlight create a clean, minimalist look—blending aesthetics and utility in any workspace.Rechargeable & Compatible:Built-in battery with sleep mode saves power. Works smoothly with most major systems—ideal for desktops, laptops, and mobile setups.Whether you're an accountant, coder, or creative, the CoolKiller CK21 adapts to your needs with versatility and sleek design. It’s not just a tool—it’s a desktop upgrade.Note: This product supports digital instructions only to promote eco-friendly practices.

• 2-in-1 Mechanical Numpad & Calculator: Use the CK21 as both a wired mechanical number pad and a portable calculator. Simply connect the included cable to your device to use it as a numpad, or unplug it to switch to an 18-key standalone mechanical calculator for accounting, office, and daily calculations
• Premium Gasket-Mounted Typing Experience: Built with a high-end gasket mount structure, featuring silicone and gasket materials on both the top and bottom of the plate and PCB. This design effectively absorbs keystroke impact, delivering a softer, quieter, and more flexible typing feel for enhanced comfort during extended use
• Hot-Swappable Mechanical Calculator: Equipped with custom Ice Blade linear switches, the CK21 supports 3-pin and 5-pin hot-swappable switches. Easily customize your typing experience by replacing switches without soldering for DIY enthusiasts seeking personalized feel and sound
• Transparent Design with White LED Backlight: Features crystal-clear keycaps and switches paired with a clean white LED backlight, creating a sleek and modern aesthetic. Use shortcut keys to toggle lighting on/off, and enjoy auto sleep mode after 2 minutes of inactivity for power saving
• Rechargeable & Wide Compatibility: Powered by a built-in 1500mAh rechargeable battery, ensuring long-lasting performance. Supports full-key anti-ghosting for accurate input and efficiency. Compatible with Windows, macOS, and Linux, working seamlessly with laptops, PCs, and desktops