Keychron K3 Ultra 8K Black Wireless Mechanical Keyboard, 75% Compact Layout, Milk POM Banana Switches, Hot-Swappable, RGB, 2.4 GHz, Bluetooth 5.2, USB-C, Up to 550-Hour Battery

EXPERT FEATURES 8K Polling : Delivers an 8000 Hz polling rate in wired and 2.4 GHz modes for fast, responsive input. Bluetooth polling is 125 Hz. Three Connection Modes : Connect through 2.4 GHz wireless, Bluetooth 5.2, or USB-C wired. Compact 75% Layout : Saves desk space while keeping a practical keyboard layout for gaming and everyday use. Keychron Milk POM Banana Switches : Pre-lubed, tactile low-profile mechanical switches made with POM and POK materials. Switches are hot-swappable without soldering. Up to 550 Hours of Battery Life : The 2600 mAh rechargeable battery provides up to 550 hours of wireless use with the backlight off. ZMK and Keychron Launcher Customization : Remap keys, set macros and shortcuts, and customize the keyboard through the Keychron Launcher web app. Low-Profile Double-Shot PBT Keycaps : Durable keycaps with oil-resistant surfaces and legends designed not to fade; non-shine-through. Compatible Across Systems : Works with Windows, macOS, and Linux. N-Key Rollover : Supports simultaneous key presses in both wired and wireless modes. EXPERT SPECS Specification Details Product name Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard Model K3U-H4 Assembly Fully assembled Color Black Switch Keychron Milk POM Banana; tactile; low-profile; pre-lubed; hot-swappable Layout 75% compact Connectivity 2.4 GHz wireless, Bluetooth 5.2, USB-C wired Polling rate 8000 Hz in wired and 2.4 GHz modes; 125 Hz in Bluetooth mode Battery 2600 mAh rechargeable lithium-polymer Wireless battery life Up to 550 hours with backlight off Firmware Open-source ZMK Customization Key remapping, macros, shortcuts, and firmware through the Keychron Launcher web app Keycaps Low-profile LSA double-shot PBT; non-shine-through; oil-resistant Hot-swappable Yes; no soldering required N-key rollover Yes, wired and wireless Compatible systems Windows, macOS, Linux Body material Aluminum and wood Bottom case material ABS plastic Plate material Anodized aluminum alloy Stabilizer Plate-mounted Backlight North-facing RGB LED Dimensions 320.62 × 126.00 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 to 50 °C