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Head to head · Prices checked Oct 31, 2026

AULA F99 Pro vs Keychron Lemokey X4

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Quick verdict

Which one should you get?

Get the

AULA F99 Pro

Build quality in the bottom 50% of 96% boards under $100.

Rules this board out

  • 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.

Get the

Keychron Lemokey X4

Build quality in the top 10% of 75% boards under $50.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No numpad.

What actually differs

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 F99 Pro

Keychron Lemokey X4

  • Layout size

    96%

    75%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

    Wireless for several devices and wired for lower latency

  • Case material

    ABS

    ABS, Plastic

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Weight

    1,023 g

    712 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • AULA F99 Pro
  • Keychron Lemokey X4
Performance
66
75
Build quality
62
83
Productivity
83
96
Customizability
66
83
Portability
63
65

What they share

  • Hot-swappable
  • Mount style: Gasket Mount
  • Knob
  • Sound dampening
See every spec side by side

Full specs

AULA F99 Pro vs Keychron Lemokey X4 specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

11 of 25 specs differ

AULA F99 Pro

Keychron Lemokey X4

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

—
1,000 Hz

Battery

8,000 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

ABS
ABS, Plastic

Plate material

Plastic, Polycarbonate
Polycarbonate

Keycaps

—
ABS, PBT

Weight

1,023 g
712 g

Dimensions

43 x 146 x 390 mm
41 x 325 x 145 mm

Typing angle

—
10°

Backlight

RGB, south-facing
Yes, south-facing

Firmware & software

QMK

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2024

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

AULA F99 Pro3 stores

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