Keychron K3 Ultra 8K White 75% Wireless Mechanical Keyboard with Red Linear Switches, Hot-Swappable Keys, Per-Key RGB, ZMK, 2.4 GHz, Bluetooth 5.2 and USB-C

Expert Features Ultra-Slim 75% Layout: A compact 84-key layout keeps the function row and arrow keys while taking up less desk space. 8K Performance: Get an 8,000 Hz polling rate over USB-C wired or 2.4 GHz wireless; Bluetooth polling is 125 Hz. Three Connection Modes: Switch between 2.4 GHz, Bluetooth 5.2, and USB-C wired connections. Bluetooth supports pairing with up to three devices. Keychron Milk POM Red Switches: Linear low-profile mechanical switches provide a smooth, consistent keystroke feel. Hot-Swappable Switches: Change compatible switches without soldering to tailor the typing feel. Customizable ZMK Controls: Remap keys, create macros, and adjust settings with the Keychron Launcher web app. Per-Key RGB: Customize the north-facing RGB backlight with more than 22 lighting settings, including static white and Mix RGB. Long Battery Runtime: The 2,600 mAh battery provides up to 550 hours with the backlight off; runtime varies with settings and use. Mac, Windows, and Linux Ready: The keyboard supports all three operating systems and includes alternate keycaps for different layouts. PBT Keycaps, Aluminum and Wood Frame: Low-profile double-shot PBT keycaps sit above an aluminum-and-wood body for a distinctive desk setup. Expert Specs Specification Details Model K3U-Q1Z Product Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard Configuration Fully assembled Color White Layout 75% compact Switch Keychron Milk POM Red, low-profile linear mechanical Hot-swappable Yes Connectivity 2.4 GHz wireless, Bluetooth 5.2, USB-C wired Polling rate 8,000 Hz wired and 2.4 GHz; 125 Hz Bluetooth Bluetooth device capacity Up to 3 paired devices Firmware and customization ZMK; Keychron Launcher web app Backlight North-facing RGB LED; 22+ settings, per-key RGB and Mix RGB Keycaps LSA double-shot PBT, non-shine-through Body material Aluminum and wood Plate material Anodized aluminum alloy Bottom case material ABS plastic Stabilizers Plate-mounted Battery Rechargeable 2,600 mAh lithium-polymer Wireless working time Up to 550 hours with backlight off Compatible systems macOS, Windows, Linux Dimensions 320.62 × 126 mm Front height 16.55 mm without keycaps Back height 20.1 mm without keycaps Feet height 2 mm Weight 566 g ± 10 g Operating environment −10°C to 50°C Bluetooth device name Keychron K3 Ultra 8K