MMD KM21 Ultra vs Sikakeyb SK3 Mountain City
Get the MMD KM21 Ultra for knob and qmk. Get the Sikakeyb SK3 Mountain City for the 1,900 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.
MMD KM21 Ultra
Sikakeyb SK3 Mountain City
Battery
980 mAh
1,900 mAh
Mount style
Top Mount
Gasket Mount
Knob
Yes
No
QMK
Yes
No
VIA
Yes
No
- MMD KM21 Ultra
- Sikakeyb SK3 Mountain City
- Performance
- 6745
- Build quality
- 8261
- Productivity
- 8951
- Customizability
- 8976
- Portability
- 8684
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
MMD KM21 Ultra vs Sikakeyb SK3 Mountain City specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 18 specs differ
MMD KM21 Ultra
Sikakeyb SK3 Mountain City
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Plate material
Backlight
QMK
VIA
Mac & Windows
Released
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