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

Head to head · Prices checked Nov 10, 2026

8BitDo Retro18 Numpad vs Yunzii AL21

Get the Yunzii AL21 for the 1,500 mAh battery and knob.

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

Quick verdict

Which one should you get?

Get the

8BitDo Retro18 Numpad

Build quality in the top 45% of Numpad boards under $100.

Get the

Yunzii AL21

Battery

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.

8BitDo Retro18 Numpad

Yunzii AL21

  • Battery

    1,000 mAh

    1,500 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum, Plastic

    Aluminum

  • Mount style

    Top Mount

    Gasket Mount

  • Knob

    No

    Yes

  • Display

    Yes

    None

    A case display rather than a typing feature

KeebFinder scores

How we score
  • 8BitDo Retro18 Numpad
  • Yunzii AL21
Performance
53
75
Build quality
69
77
Productivity
49
84
Customizability
50
74
Portability
83
89

What they share

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

Full specs

8BitDo Retro18 Numpad vs Yunzii AL21 specs

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

12 of 20 specs differ

8BitDo Retro18 Numpad

Yunzii AL21

Typing & switches

Switch options

—
Linear

Hot-swappable

Yes
Yes

Mount style

Top Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
—

Ergonomics

Standard
Standard

Knob

No
Yes

Display

Yes
None

Connectivity & battery

Connection

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

Battery

1,000 mAh
1,500 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum, Plastic
Aluminum

Keycaps

ABS, PBT
PBT

Weight

300 g
458 g

Dimensions

46 x 104 x 170 mm
44 x 136 x 91 mm

Backlight

None
RGB, south-facing

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

No
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 AL212 stores

Still torn?

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