Coolkiller CK75 vs Firstblood B81
Get the Firstblood B81 for knob.
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
Firstblood B81
Case material
ABS, Aluminum, Plastic
Acrylic
Switch options
Linear, Tactile
Linear
Knob
No
Yes
Weight
1,050 g
1,500 g
Keycaps
ABS, PBT
ABS, PBT, PC
- Coolkiller CK75
- Firstblood B81
- Performance
- 6152
- Build quality
- 6761
- Productivity
- 8791
- Customizability
- 6979
- Portability
- 8283
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Battery: 3,750 mAh
- Mount style: Gasket Mount
- Sound dampening
Coolkiller CK75 vs Firstblood B81 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 23 specs differ
Coolkiller CK75
Firstblood B81
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
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