A macro column and a knob
Twenty-seven keys: the number pad, an extra column you can fill with macros, and a rotary encoder.
Keychron
K0 Max
Ultra-slim wireless number pad
Twenty-seven low-profile keys, a column of macros and a rotary knob, in 176 grams that sit on either side of the keyboard you already have.
- 27 keys
- Number pad
- 2.4 GHz
- Bluetooth 5.3
- USB-C
- QMK
- 176 g
At a glance
Three ways in
2.4 GHz at 1000 Hz, Bluetooth 5.3, or USB-C — and 176 g means it travels with the laptop.
QMK in the browser
Open-source firmware with the Keychron Launcher web app.
Hot-swappable
Low-profile switches come out without a soldering iron — Gateron and Keychron mechanical ones.
More than a number pad
The numbers are the obvious part. Next to them sits a column of keys with nothing assigned to them and a rotary knob at the top — put your macros on one and volume, brightness or a scrub through a timeline on the other. On a tenkeyless board it gives back the numbers; next to a full-size one it becomes a small control surface.
99 by 116 millimetres, 176 grams
Low-profile switches under low-profile keycaps, in an ABS and aluminium frame 13.27 mm high before the caps go on. It takes up less desk than a phone and goes in the bag without being noticed.
Switches come out with your fingers
It ships with Keychron Milk POM low-profile switches, and every socket is hot-swappable. One limit worth knowing: low-profile mechanical switches from Gateron and Keychron fit, but optical ones do not, because QMK does not support them.
LSA keycaps, double-shot PBT
A low-profile spherical-angled profile: the dish that keeps the fingertip centred, at a height that suits a slim board. Double-shot PBT, so the legends are moulded in rather than printed on and the surface stays matte.
Stabilisers, redesigned
The long keys on a number pad — the zero, the plus, the enter — are where wobble shows up first. These stabilisers were rebuilt to hold the keycap squarer to the switch, which is what stops the rattle.
Every key, yours to decide
Open-source QMK firmware, configured in the Keychron Launcher web app: remap a key, record a macro, set what the knob does. Nothing to download and nothing to install, and the twenty-two RGB modes are tuned in the same place.
What comes in the box
The number pad, the 2.4 GHz receiver, a USB-C cable, a combined keycap and switch puller, and the quick start guide.
On the desk
Specification
Keyboard
- Number of keys
- 27, number pad with a macro column and a knob
- Switches
- Keychron Milk POM low-profile, hot-swappable
- Switch support
- Gateron and Keychron low-profile mechanical; not optical
- Switch orientation
- North-facing
- Keycaps
- LSA profile, low-profile double-shot PBT
- Frame
- ABS and aluminium
- Backlight
- RGB, 22 modes
- N-key rollover
- Yes, wired and wireless
Connectivity and power
- Connection
- 2.4 GHz / Bluetooth / USB-C
- Bluetooth
- 5.3
- Polling rate
- 1000 Hz on 2.4 GHz and wired, 125 Hz on Bluetooth
- Battery
- 750 mAh lithium-polymer
- Battery life
- About 50 h with the RGB at its lowest brightness
- Controller
- ARM Cortex-M3 STM32L432, 1 MB flash
- Operating systems
- macOS, Windows, Linux
Physical
- Dimensions
- 99 × 116 mm
- Weight
- 176.3 g
- Height
- 13.27 mm without keycaps; 24.14 mm at the front and 20.18 mm at the back with them
- Typing angles
- 3°
- Operating temperature
- −10 °C to 50 °C
Figures published by the manufacturer. Battery life is a laboratory result and varies with use.
Interested in this keyboard?
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