The Keychron K3 QMK Wireless is a compact 75% mechanical keyboard with a low-profile design, offering both wireless and wired connectivity via Bluetooth 5.2 and USB, with a detachable cable included. It uses a tray mount configuration and is compatible with Mac layouts. The keyboard measures 306 mm wide, 116 mm deep, and 23 mm thick, weighing 540 g, making it a relatively compact unit in terms of physical footprint. At a 1000 Hz polling rate and with a battery life of up to 124 hours, it balances responsiveness with extended wireless use. The warranty period covers one year.
The keyboard features a case constructed from a combination of plastic and aluminum, with an aluminum plate, and is available in black and gray colorways. It includes RGB backlighting with a north-facing LED direction, which affects how light interacts with the keycaps. Adjustable feet are present to allow for some tilt customization, though no wrist rest is included in the package.
The keyboard is equipped with Keychron Low-profile mechanical switches that offer a linear feel, with an actuation distance of 1.3 mm, an actuation force of 45 g, and a total travel distance of 3.1 mm. These are hot-swappable, meaning individual switches can be replaced without soldering, which adds flexibility for customization or maintenance over time.
The keyboard supports QMK firmware, enabling custom key remapping and macro configuration, and includes full N-key rollover (NKRO) for registering simultaneous keypresses without conflict. It does not support ZMK or VIA, and lacks features such as analog input, rapid trigger, dual actuation, adjustable actuation, USB passthrough, and an onboard display.
The keyboard uses an ANSI (United States) layout with a standard key arrangement and OEM profile keycaps made from PBT double-shot shine-through material, which allows backlighting to pass through the legends. Media controls are accessible via the Fn key rather than dedicated keys, and there is no rotary dial present on the board.
