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Head to head · Prices checked Oct 31, 2026

Feker JJK21 vs Yunzii YZ19

Get the Feker JJK21 for sound dampening. Get the Yunzii YZ19 for mac & windows.

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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

Yunzii YZ19

Mac & Windows

Build quality in the top 40% 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

Yunzii YZ19

  • Weight

    300 g

    219.5 g

    Heavier boards stay planted and lighter ones travel

  • Sound dampening

    Yes

    No

  • Backlight

    RGB

    RGB, south-facing

    RGB for looks and low light rather than speed

  • Mac & Windows

    No

    Yes

  • Released

    2022

    2024

KeebFinder scores

How we score
  • Feker JJK21
  • Yunzii YZ19
Performance
77
75
Build quality
75
67
Productivity
74
64
Customizability
80
74
Portability
86
84

What they share

  • Layout size: Numpad
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Battery: 1,500 mAh
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Feker JJK21 vs Yunzii YZ19 specs

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

6 of 21 specs differ

Feker JJK21

Yunzii YZ19

Typing & switches

Switch options

—
Linear, Tactile

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
None

Connectivity & battery

Connection

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

Battery

1,500 mAh
1,500 mAh

USB-C

Yes
No

Build & materials

Case material

Plastic
—

Plate material

Plastic
—

Keycaps

—
PBT

Weight

300 g
219.5 g

Dimensions

—
41 x 136 x 92 mm

Backlight

RGB
RGB, south-facing

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

No
Yes

Extras

Released

2022
2024

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
Yunzii YZ192 stores

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