Ajazz AK992 vs Keychron B39
Get the Ajazz AK992 for hot-swappable and the 4,000 mAh battery.
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Which one should you get?
Get the
Ajazz AK992
Hot-swappable
Build quality in the top 50% of 96% boards under $100.
Get the
Keychron B39
Build quality in the bottom 15% of 96% boards under $100.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
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.
Ajazz AK992
Keychron B39
Hot-swappable
Yes
No
Switch changes without soldering
Battery
4,000 mAh
800 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Ergonomics
Standard
Alice
Case material
ABS, Aluminum, PBT, Plastic
ABS, Plastic
- Ajazz AK992
- Keychron B39
- Performance
- 5148
- Build quality
- 6144
- Productivity
- 8474
- Customizability
- 7444
- Portability
- 5449
- Layout size: 96%
- Connection: Bluetooth, 2.4 GHz, Wired
- Switch options: Clicky, Linear, Tactile
- Knob
Ajazz AK992 vs Keychron B39 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 22 specs differ
Ajazz AK992
Keychron B39
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Backlight
Mac & Windows
Released
Compare prices
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