Feker JJK21 vs Yunzii C21
Get the Feker JJK21 for knob and sound dampening. Get the Yunzii C21 for the 2,500 mAh battery.
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2.8 (10)2.8 · 10 reviews
from$39at WhatGeek
90-day lowLowest price in 90 days
Which one should you get?
Get the
Yunzii C21
Battery
Build quality in the bottom 50% of Numpad boards under $100.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
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 C21
Battery
1,500 mAh
2,500 mAh
A larger battery means fewer cables during the day
Knob
Yes
No
Display
None
TFT
A case display rather than a typing feature
Weight
300 g
250 g
Heavier boards stay planted and lighter ones travel
Sound dampening
Yes
No
- Feker JJK21
- Yunzii C21
- Performance
- 7770
- Build quality
- 7563
- Productivity
- 7458
- Customizability
- 8066
- Portability
- 8688
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Mount style: Gasket Mount
Feker JJK21 vs Yunzii C21 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 22 specs differ
Feker JJK21
Yunzii C21
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
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