Keychron B31 vs K4 Pro
Get the Keychron K4 Pro for hot-swappable and the 4,000 mAh battery.
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No reviews
from$34at MK
90-day lowLowest price in 90 days
4.7 · 7 reviews
from$69at Keychron
Which one should you get?
Get the
Keychron B31
Build quality in the bottom 20% of 75% boards under $50.
- Switches are soldered. Swapping them means soldering.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- No numpad.
Get the
Keychron K4 Pro
Hot-swappable
Build quality in the top 10% of 96% boards under $100.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
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 B31
Keychron K4 Pro
Layout size
75%
96%
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired
Wireless for several devices and wired for lower latency
Hot-swappable
No
Yes
Switch changes without soldering
Battery
800 mAh
4,000 mAh
A larger battery means fewer cables during the day
Mount style
PCB Mount
Tray Mount
- Keychron B31
- Keychron K4 Pro
- Performance
- 5981
- Build quality
- 5284
- Productivity
- 6995
- Customizability
- 4696
- Portability
- 7954
- Max polling rate: 1,000 Hz
- Case material: ABS, Plastic
- Switch options: Clicky, Linear, Tactile
Keychron B31 vs K4 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
16 of 26 specs differ
Keychron B31
Keychron K4 Pro
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
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B31
No ISO layout at the stores we track.
Keychron K4 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
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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