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Head to head · Prices checked Oct 31, 2026

Feker JJK21 vs Womier SK30 Kanagawa Numpad

Get the Feker JJK21 for sound dampening. Get the Womier SK30 Kanagawa Numpad for the 3,000 mAh battery.

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Sound dampening

Feker JJK21

FEKER JJK21 Numpad DIY Kit with Knob

2.8 (10)

$39at WhatGeek

90-day low

Quick verdict

Which one should you get?

Get the

Feker JJK21

Sound dampening

Build quality in the top 25% of Numpad boards under $50.

Get the

Womier SK30 Kanagawa Numpad

Battery

Build quality in the top 30% 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.

Feker JJK21

Womier SK30 Kanagawa Numpad

  • Battery

    1,500 mAh

    3,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    Plastic

    ABS

  • Display

    None

    TFT

    A case display rather than a typing feature

  • Sound dampening

    Yes

    No

  • Plate material

    Plastic

    Polycarbonate

KeebFinder scores

How we score
  • Feker JJK21
  • Womier SK30 Kanagawa Numpad
Performance
77
75
Build quality
75
72
Productivity
74
76
Customizability
80
79
Portability
86
90

What they share

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

Full specs

Feker JJK21 vs Womier SK30 Kanagawa Numpad specs

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

8 of 21 specs differ

Feker JJK21

Womier SK30 Kanagawa Numpad

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
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
TFT

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

1,500 mAh
3,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Plastic
ABS

Plate material

Plastic
Polycarbonate

Keycaps

—
PBT

Weight

300 g
—

Backlight

RGB
RGB, south-facing

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

No
Yes

Extras

Released

2022
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.

Feker JJK212 stores

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