Which one should you get?
Get the
AULA F108 Pro V2
Battery
Build quality in the top 25% of 100% boards under $150.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Keychron K4 Ultra
Build quality in the bottom 40% of 96% boards under $150.
- 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.
AULA F108 Pro V2
Keychron K4 Ultra
Layout size
100%
96%
Battery
10,000 mAh
4,000 mAh
A larger battery means fewer cables during the day
Case material
ABS, Plastic
ABS
Switch options
Linear
Clicky, Linear, Tactile
Mount style
Gasket Mount
Plate Mount
- AULA F108 Pro V2
- Keychron K4 Ultra
- Performance
- 8888
- Build quality
- 6563
- Productivity
- 7587
- Customizability
- 6875
- Portability
- 6657
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Max polling rate: 8,000 Hz
- Sound dampening
- Keycaps: PBT
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
AULA F108 Pro V2
3 owner reviews
“just received the keyboard. I am so happy with it!! I chose the Cotton Candy switches, and this is exactly what I was looking for. I had tried other mechanical keyboards before, but they were never quite what I wanted. These switches are so soft and feel…”
“The overall build quality and the feel is amazing but it sometimes restarts itself for no apparent reason (every 3h or so) when used wired.”
Keychron K4 Ultra
2 owner reviews
“Quality keyboard. I just wish the indicator lights for caps lock and num lock was brighter. Even tried increasing it on the software but it isn't enough.”
AULA F108 Pro V2 vs Keychron K4 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 23 specs differ
AULA F108 Pro V2
Keychron K4 Ultra
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
Backlight
N-key rollover
Mac & Windows
Released
Compare prices
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