Keychron K8 Ultra is a wireless custom mechanical keyboard featuring a premium full-metal frame. It supports 2.4 GHz wireless, Bluetooth, and wired connections. Through the Keychron Launcher web app, you can remap any key and create macros on its compact TKL layout. Powered by ZMK firmware, it delivers an 8K polling rate in wireless mode while offering up to 760 hours of battery life (with the backlight off). It is also fully compatible with Windows, macOS, and Linux.