Keychron B1 Pro vs Yunzii C21
Get the Yunzii C21 for hot-swappable and the 2,500 mAh battery.
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4.0 (8)4.0 · 8 reviews
from$37at MK
Which one should you get?
Get the
Keychron B1 Pro
Build quality in the bottom 5% of 75% boards under $50.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- No numpad.
Get the
Yunzii C21
Hot-swappable
Build quality in the bottom 50% of Numpad boards under $100.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Numpad only. This is not a full keyboard.
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 B1 Pro
Yunzii C21
Layout size
75%
Numpad
Hot-swappable
No
Yes
Switch changes without soldering
Battery
800 mAh
2,500 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Switch options
Clicky, Linear, Tactile
Linear
- Keychron B1 Pro
- Yunzii C21
- Performance
- 5070
- Build quality
- 4263
- Productivity
- 6858
- Customizability
- 4666
- Portability
- 7888
- Connection: Bluetooth, 2.4 GHz, Wired
- Max polling rate: 1,000 Hz
Keychron B1 Pro vs Yunzii C21 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 22 specs differ
Keychron B1 Pro
Yunzii C21
Switch options
Hot-swappable
Mount style
Low profile
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Typing angle
Backlight
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B1 Pro
Keychron
ISO
In stockShips to you
Keychron (DE)
ISO
In stockDoes not ship to you
Yunzii C21
No ISO layout at the stores we track.
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
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