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Head to head · Prices checked Nov 10, 2026

Cidoo V21 vs Keychron V0 Ultra Numpad

Get the Cidoo V21 for via. Get the Keychron V0 Ultra Numpad for hot-swappable and the 1,800 mAh battery.

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Quick verdict

Which one should you get?

Get the

Cidoo V21

VIA

Build quality in the top 20% of Numpad boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

Get the

Keychron V0 Ultra Numpad

Hot-swappable

Build quality in the top 40% 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.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

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.

Cidoo V21

Keychron V0 Ultra Numpad

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Battery

    1,000 mAh

    1,800 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum

    Plastic

  • Weight

    500 g

    310 g

    Heavier boards stay planted and lighter ones travel

  • VIA

    Yes

    No

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • Cidoo V21
  • Keychron V0 Ultra Numpad
Performance
59
87
Build quality
79
72
Productivity
87
87
Customizability
75
73
Portability
83
86

What they share

  • Layout size: Numpad
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Mount style: Gasket Mount
  • Knob
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Cidoo V21 vs Keychron V0 Ultra Numpad specs

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

10 of 25 specs differ

Cidoo V21

Keychron V0 Ultra Numpad

Typing & switches

Switch options

—
Clicky, Linear, Tactile

Hot-swappable

No
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ISO
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

—
8,000 Hz

Battery

1,000 mAh
1,800 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Plastic

Plate material

Plastic
Polycarbonate

Keycaps

PBT
PBT

Weight

500 g
310 g

Dimensions

30 x 145 x 90 mm
29 x 118 x 139 mm

Typing angle

—
3°

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

VIA

Yes
No

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2026

For EU buyers

ISO layouts by store

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

Cidoo V21

  • WhatGeek

    ISO

    Out of stockShips to you

Keychron V0 Ultra Numpad

No ISO layout at the stores we track.

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.

Cidoo V212 stores

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