Cidoo Nebula vs Firstblood B21
Get the Cidoo Nebula for hot-swappable and knob.
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3.4 (48)3.4 · 48 reviews
from$55at Mechkeys
No reviews
from$75at WhatGeek
Which one should you get?
Get the
Cidoo Nebula
Hot-swappable
Build quality in the bottom 45% of 65% boards under $100.
Get the
Firstblood B21
Build quality in the bottom 30% of 65% boards under $100.
- Switches are soldered. Swapping them means soldering.
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.
Cidoo Nebula
Firstblood B21
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Wireless for several devices and wired for lower latency
Hot-swappable
Yes
No
Switch changes without soldering
Case material
ABS
Aluminum
Knob
Yes
No
Weight
457 g
818 g
Heavier boards stay planted and lighter ones travel
- Cidoo Nebula
- Firstblood B21
- Performance
- 4856
- Build quality
- 6253
- Productivity
- 7354
- Customizability
- 8546
- Portability
- 8883
- Layout size: 65%
Cidoo Nebula vs Firstblood B21 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 21 specs differ
Cidoo Nebula
Firstblood B21
Switch options
Hot-swappable
Mount style
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Typing angle
Backlight
VIA
N-key rollover
Mac & Windows
Released
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