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Head to head · Prices checked Nov 2, 2026

AULA F99 Pro vs Keychron K4 HE

Get the AULA F99 Pro for the 8,000 mAh battery. Get the Keychron K4 HE for hall effect and rapid trigger.

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Quick verdict

Which one should you get?

Get the

AULA F99 Pro

Battery

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.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

Get the

Keychron K4 HE

Hall effect

Build quality in the top 10% of 96% boards under $150.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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 K4 HE

  • Hall effect (magnetic)

    No

    Yes

    Adjustable actuation helps in games and not in normal typing

  • Rapid trigger

    No

    Yes

    Faster resets help in games and not in normal typing

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired, 2.4 GHz

    Wireless for several devices and wired for lower latency

  • Battery

    8,000 mAh

    4,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    ABS

    ABS, Aluminum, Plastic, Wood

KeebFinder scores

How we score
  • AULA F99 Pro
  • Keychron K4 HE
Performance
66
92
Build quality
62
87
Productivity
83
94
Customizability
66
89
Portability
63
56

What they share

  • Layout size: 96%
  • Hot-swappable
  • Sound dampening
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

AULA F99 Pro

4.7

41 owner reviews

Praise
“I got the Aula F99 pro 2 of them and 2 of the Aula black mice. Most amazing keyboard and mouse. I use them with my Galaxy phone with Samsung Dex, as well my gaming pc.”
Garrick A.Verified buyer· via Epomaker
Critique
“JUNK GARBAGE TRASH. What can I say. I cant type on it and I cant use it. TOSSING IT”
Squirrelnutz· via Epomaker

Keychron K4 HE

4.0

11 owner reviews

Praise
“So far it have met my expectations for the use i wanted it for, had a small hic up the first day i started ysing it but got easily resolved with the provided user manual”
PabloVerified buyer· via Keychron
Critique
“The keyboard is smooth to the touch, and has the nice feel. For me, it's almost an ideal keyboard but the one thing that gets me and it's a hard issue is that when connected, it takes away input from my controller when I game, especially for live service…”
Vick L.Verified buyer· via Keychron

Full specs

AULA F99 Pro vs Keychron K4 HE specs

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

18 of 28 specs differ

AULA F99 Pro

Keychron K4 HE

Typing & switches

Switch options

Linear
Clicky, Linear, Magnetic, Tactile

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Tray Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
96%

Layout standard

ANSI
ANSI, ISO, ISO-CH, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired, 2.4 GHz

Max polling rate

—
1,000 Hz

Battery

8,000 mAhBetter
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS
ABS, Aluminum, Plastic, Wood

Plate material

Plastic, Polycarbonate
Aluminum

Keycaps

—
PBT

Weight

1,023 g
1,090 g

Dimensions

43 x 146 x 390 mm
31 x 126 x 373 mm

Typing angle

—
5°, 8°

Backlight

RGB, south-facing
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2025

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

AULA F99 Pro

No ISO layout at the stores we track.

Keychron K4 HE

  • Keychron

    ISO-DE, ISO-UK, ISO-Nordic, ISO-CH

    In stockShips to you

  • Keychron (DE)

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-CH

    In stockDoes not ship to you

Where to buy

Compare prices

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

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

AULA F99 Pro3 stores

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