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Head to head · Prices checked Nov 10, 2026

Velocifire stars21 Numeric Keypad vs Yunzii AL21

Get the Velocifire stars21 Numeric Keypad for the 2,000 mAh battery and qmk. Get the Yunzii AL21 for knob.

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Quick verdict

Which one should you get?

Get the

Velocifire stars21 Numeric Keypad

Battery

Build quality in the top 15% of Numpad boards under $100.

Get the

Yunzii AL21

Knob

Build quality in the top 10% of Numpad boards under $50.

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.

Velocifire stars21 Numeric Keypad

Yunzii AL21

  • Battery

    2,000 mAh

    1,500 mAh

    A larger battery means fewer cables during the day

  • Knob

    No

    Yes

  • Weight

    460 g

    458 g

    Heavier boards stay planted and lighter ones travel

  • QMK

    Yes

    No

    The deep option when you want to remap every key

  • VIA

    Yes

    No

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • Velocifire stars21 Numeric Keypad
  • Yunzii AL21
Performance
63
75
Build quality
82
77
Productivity
57
84
Customizability
84
74
Portability
82
89

What they share

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

Full specs

Velocifire stars21 Numeric Keypad vs Yunzii AL21 specs

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

11 of 23 specs differ

Velocifire stars21 Numeric Keypad

Yunzii AL21

Typing & switches

Switch options

—
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
—

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

2,000 mAhBetter
1,500 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
Aluminum

Keycaps

—
PBT

Weight

460 g
458 g

Dimensions

23 x 130 x 95 mm
44 x 136 x 91 mm

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
No

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.

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Lowest price across stores, Amazon excluded.

Yunzii AL212 stores

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