Keychron K2 Pro QMK/VIA Wireless Mechanical Keyboard - Fully Assembled Aluminum Frame A fully customizable wireless custom mechanical keyboard allows anyone to master any keys or macro commands on its 75% compact layout through VIA, it has included keycaps for both Windows and macOS, and users can hot-swap with any MX mechanical switch in a breeze. Program with QMK & VIA Simply connect the K2 Pro to your device with a cable, drag and drop your favorite keys or macro commands to remap any key you want on any system (macOS, Windows, or Linux). Hot-swappable The hot-swappable sockets are mounted on the PCB, so you can hot-swap every switch on the K2 Pro with almost all of the 3pin and 5pin MX style mechanical switches on the market (including Cherry, Gateron, Kailh, Panda, etc.) without soldering. You can customize your own typing experience in seconds. The pre-installed pre-lubed Keychron K Pro blue switches given that 2 ±0.4mm pre-travel and 60 ±10gf operating force, features a nice clicky feeling. All-Around Customizable Keyboard To build a fully customizable keyboard, we designed every component easily assembled. Therefore, you can customize and adjust each component you want. Specification Number of Keys: 84 (75% Layout) Frame Material: ABS+Aluminum frame Keycaps: OSA (OEM profile with spherical-angle) with non-backlit shine through double-shot PBT N-Key Rollover (NKRO): Yes for both wireless and wired modes Polling Rate (Wired Mode): 1000 Hz Polling Rate (Wireless Mode): 90 Hz Connectivity: Bluetooth 5.1 and Type-C cable Stabilizers: PCB-mounted screw-in stabilizers Switches: Keychron K Pro blue switches Pre-installed; Hot-swappable (5 pin & 3 pin) Compatible System: macOS/Windows/Linux Battery: 4000 mAh rechargeable li-polymer battery MCU: Ultra-low-power ARM Cortex-M4 32-bit STM32L432 (128KB Flash) Backlight: South-facing RGB Backlight Weight: About 1070 g / 2.36 lbs Dimension: 316.6 x 126.91 mm (12.46 x 4.99")(Aluminum frame version) South-facing RGB Lights The south-facing RGB is designed to better illuminate the keyboard backlight from the typist’s angle. The south-facing RGB is also free from interference when the user installs Cherry-profile alternative keycaps on their keyboard. Comes with more than 22 types of RGB backlight settings, you can further fine-tune the RGB hue, saturation, brightness, effect speed with ease. Please Note: All tools are placed on bottom of the box.