Head to head · Prices checked Nov 2, 2026

AULA F75 vs Yunzii C21

Get the AULA F75 for the 4,000 mAh battery and knob.

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Battery

AULA F75

4.5 (510)4.5 · 510 reviews

from$42at Epomaker

90-day lowLowest price in 90 days

Compare 5 stores

Yunzii C21

No reviews

from$54at Yunzii

Compare 2 stores

Quick verdict

Which one should you get?

Get the

AULA F75

Battery

Build quality in the bottom 35% 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.

$42 at Epomaker

Get the

Yunzii C21

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

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Numpad only. This is not a full keyboard.

$54 at Yunzii

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 F75

Yunzii C21

Layout size
75%
Numpad
Battery
4,000 mAh
2,500 mAh
A larger battery means fewer cables during the day
Switch options
Linear, Silent
Linear
Knob
Yes
No
Display
None
TFT
A case display rather than a typing feature

KeebFinder scores

How we score

AULA F75
Yunzii C21

Performance: 64
70
Build quality: 66
63
Productivity: 93
58
Customizability: 82
66
Portability: 83
88

What they share

Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
Max polling rate: 1,000 Hz
Mount style: Gasket Mount

See every spec side by side

Full specs

AULA F75 vs Yunzii C21 specs

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

12 of 23 specs differ

Spec

AULA F75

Yunzii C21

Typing & switches

Switch options

Linear, Silent

Linear

Hot-swappable

Yes

Mount style

Gasket Mount

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Numpad

Layout standard

ANSI

—

Ergonomics

Standard

Knob

Yes

Display

None

TFT

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

Battery

4,000 mAhBetter

2,500 mAh

USB-C

Yes

Build & materials

Case material

Plastic

—

Keycaps

ABS, PBT

PBT

Weight

1,023 g

250 g

Dimensions

43 x 143 x 323 mm

39 x 153 x 98 mm

Backlight

RGB, south-facing

Firmware & software

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2023

2026

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 F755 stores