The GMMK 3 75% is a wired mechanical gaming keyboard built around a compact 75% layout with a standard profile, connecting to a host system via USB at a 1000 Hz polling rate for responsive input. It uses a gasket mount construction and comes with a detachable cable for easier transport or replacement. The board measures 338 mm wide, 152 mm tall, and 44.5 mm thick, and is not designed for Mac use. A 2-year warranty is included.
The GMMK 3 75% is built with a plastic and aluminum case paired with an aluminum plate, and is available in either black or white. It supports RGB lighting, though it does not function as a standard backlit keyboard. The board includes adjustable feet for changing the tilt angle, but does not come with a wrist rest.
The GMMK 3 75% ships with Glorious Fox mechanical switches, which have a linear feel and require 48 g of actuation force over a total travel distance of 4.1 mm. The board supports hot-swappable switches, meaning they can be pulled out and replaced without soldering.
The GMMK 3 75% includes rapid trigger and N-key rollover (NKRO) as its two notable features, allowing for more responsive keypress detection and simultaneous input registration across all keys. It does not support analog input, dual actuation, or adjustable actuation, and there is no USB passthrough or built-in display. On the firmware side, QMK, ZMK, and VIA are not supported.
The GMMK 3 75% uses an ANSI (United States) layout with a standard key arrangement, and comes fitted with PBT double-shot keycaps in an OEM profile. Media functions are accessible through the Fn key rather than dedicated keys, and the board includes a rotary dial for additional input control.
