Coolkiller CK75 vs Keychron K2 Ultra
Get the Keychron K2 Ultra for the 4,000 mAh battery and qmk.
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.
Coolkiller CK75
Keychron K2 Ultra
Battery
3,750 mAh
4,000 mAh
Case material
ABS, Aluminum, Plastic
ABS, Aluminum
Switch options
Linear, Tactile
Clicky, Linear, Tactile
Weight
1,050 g
1,084 g
QMK
No
Yes
- Coolkiller CK75
- Keychron K2 Ultra
- Performance
- 6190
- Build quality
- 6786
- Productivity
- 8694
- Customizability
- 6992
- Portability
- 8282
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Mount style: Gasket Mount
- Sound dampening
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Coolkiller CK75
No owner reviews collected yet.
Keychron K2 Ultra
4 owner reviews
“very compact, build quality is great, and I don't even feel any latency when using the keyboard wireless.”
“The only "zmk" support is from the launcher itself and its missing most of the ZMK features. For example Combos!”
Coolkiller CK75 vs Keychron K2 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 25 specs differ
Coolkiller CK75
Keychron K2 Ultra
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
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