Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Nov 7, 2026

Epomaker TH40 vs Yunzii C21

Get the Epomaker TH40 for the 3,000 mAh battery.

KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

EPOMAKER TH40

3.9 (56)

$55at Epomaker

90-day low

Quick verdict

Which one should you get?

Get the

Epomaker TH40

Battery

Build quality in the top 30% of 40% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • Compact layout only. No function row, dedicated arrow keys, or numpad.

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.

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.

Epomaker TH40

Yunzii C21

  • Layout size

    40%

    Numpad

  • Battery

    3,000 mAh

    2,500 mAh

    A larger battery means fewer cables during the day

  • Ergonomics

    Split Spacebar

    Standard

  • Display

    None

    TFT

    A case display rather than a typing feature

  • Weight

    500 g

    250 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • Epomaker TH40
  • Yunzii C21
Performance
74
70
Build quality
75
63
Productivity
62
58
Customizability
85
66
Portability
84
88

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Max polling rate: 1,000 Hz
  • Switch options: Linear
  • Mount style: Gasket Mount
  • Keycaps: PBT
See every spec side by side

Full specs

Epomaker TH40 vs Yunzii C21 specs

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

10 of 22 specs differ

Epomaker TH40

Yunzii C21

Typing & switches

Switch options

Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Layout

Layout size

40%
Numpad

Layout standard

ANSI
—

Ergonomics

Split Spacebar
Standard

Display

None
TFT

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
1,000 Hz

Battery

3,000 mAhBetter
2,500 mAh

USB-C

No
Yes

Build & materials

Case material

ABS
—

Plate material

Plastic, Polycarbonate
—

Keycaps

PBT
PBT

Weight

500 g
250 g

Dimensions

35 x 258 x 97 mm
39 x 153 x 98 mm

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
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.

Yunzii C212 stores

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.