Keychron K3 Ultra 8K is an ultra-slim wireless custom mechanical keyboard. It supports 2.4 GHz, Bluetooth, and a wired connection. It allows users to customize any key or macro command on its 75% compact layout through the Keychron Launcher web app. Powered by ZMK firmware, it enables an 8K polling rate in wireless mode while delivering up to 550 hours of battery life. In addition, it includes LSA (low-profile spherical-angled) keycaps and is fully compatible with Windows, macOS, and Linux.

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The Keychron K3U-H3 Ultra 8K Wireless Mechanical Keyboard is a high-performance keyboard designed for gaming. With 84 low-profile keys, a QWERTY layout, and brown tactile switches, it offers a comfortable and precise typing experience. The keyboard is powered by a long-lasting 550-hour battery and features wireless connectivity via 2.4GHz, Bluetooth, and USB-C. Its ergonomic design, hot-swappable keys, and programmable key functions make it a versatile and customizable option for gamers and typing enthusiasts alike. With its sleek aluminum and wood frame construction and RGB backlighting support, the Keychron K3U-H3 is a top choice for those seeking a high-quality and stylish keyboard.