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Head to head · Prices checked Nov 11, 2026

Coolkiller ROCOCO Numpad vs Yunzii C21

Get the Coolkiller ROCOCO Numpad for sound dampening. Get the Yunzii C21 for n-key rollover and usb-c.

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Quick verdict

Which one should you get?

Get the

Coolkiller ROCOCO Numpad

Sound dampening

Build quality in the bottom 45% 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.
$89 at WhatGeek

Get the

Yunzii C21

N-key rollover

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.
$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.

Coolkiller ROCOCO Numpad

Yunzii C21

  • Display

    None

    TFT

    A case display rather than a typing feature

  • Sound dampening

    Yes

    No

  • N-key rollover

    No

    Yes

  • Released

    2024

    2026

  • USB-C

    No

    Yes

KeebFinder scores

How we score
  • Coolkiller ROCOCO Numpad
  • Yunzii C21
Performance
56
69
Build quality
61
62
Productivity
60
58
Customizability
63
66
Portability
83
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

Coolkiller ROCOCO Numpad vs Yunzii C21 specs

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

5 of 20 specs differ

Coolkiller ROCOCO Numpad

Yunzii C21

Typing & switches

Switch options

—
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

—
2,500 mAh

USB-C

No
Yes

Build & materials

Case material

ABS
—

Keycaps

—
PBT

Weight

—
250 g

Dimensions

—
39 x 153 x 98 mm

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

N-key rollover

No
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.

Coolkiller ROCOCO Numpad2 stores
Yunzii C212 stores

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