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Head to head · Prices checked Nov 11, 2026

zFrontier Soso pad Numpad vs Yunzii C21

Get the zFrontier Soso pad Numpad for via and sound dampening. Get the Yunzii C21 for the 2,500 mAh battery.

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Quick verdict

Which one should you get?

Get the

zFrontier Soso pad Numpad

VIA

Build quality in the top 30% of Numpad boards under $100.

Get the

Yunzii C21

Battery

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.

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.

zFrontier Soso pad Numpad

Yunzii C21

  • Battery

    700 mAh

    2,500 mAh

    A larger battery means fewer cables during the day

  • Switch options

    Linear, Tactile

    Linear

  • Display

    None

    TFT

    A case display rather than a typing feature

  • VIA

    Yes

    No

    GUI remapping without compiling firmware

  • Sound dampening

    Yes

    No

KeebFinder scores

How we score
  • zFrontier Soso pad Numpad
  • Yunzii C21
Performance
46
69
Build quality
77
62
Productivity
62
58
Customizability
53
66
Portability
82
88

What they share

  • Layout size: Numpad
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Mount style: Gasket Mount
See every spec side by side

Full specs

zFrontier Soso pad Numpad vs Yunzii C21 specs

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

8 of 23 specs differ

zFrontier Soso pad Numpad

Yunzii C21

Typing & switches

Switch options

Linear, Tactile
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
No

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
—

Ergonomics

Standard
Standard

Display

None
TFT

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

700 mAh
2,500 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
—

Plate material

FR4
—

Keycaps

—
PBT

Weight

—
250 g

Dimensions

—
39 x 153 x 98 mm

Typing angle

7°
—

Backlight

None
RGB, south-facing

Firmware & software

VIA

Yes
No

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2026
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.

Yunzii C212 stores

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