Keychron K6 Pro vs MMD KM21 Ultra
Get the Keychron K6 Pro for the 4,000 mAh battery.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron K6 Pro
MMD KM21 Ultra
Layout size
65%
Numpad
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Battery
4,000 mAh
980 mAh
Case material
ABS, Aluminum, Plastic
Aluminum
Mount style
PCB Mount, Tray Mount
Top Mount
- Keychron K6 Pro
- MMD KM21 Ultra
- Performance
- 7467
- Build quality
- 8982
- Productivity
- 9189
- Customizability
- 9689
- Portability
- 8886
- Hot-swappable
- QMK
- VIA
- Sound dampening
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K6 Pro
8 owner reviews
“This is my first serious mechanical keyboard. It sounds and feels great stock. You don't really need to mod it, but if you do, i think it will sounds amazing. 0 regrets, im very satisfied.”
“I received this item broken: switches, plate, box, stabilizers- everything was either broken or not assembled properly.”
MMD KM21 Ultra
No owner reviews collected yet.
Keychron K6 Pro vs MMD KM21 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 27 specs differ
Keychron K6 Pro
MMD KM21 Ultra
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Lowest price across stores, Amazon excluded.
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