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Head to head · Prices checked Oct 31, 2026

Epomaker EK21 vs Keydous NJ98

Get the Keydous NJ98 for the 8,000 mAh battery.

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EPOMAKER EK21

Epomaker EK21

4.5 · 34 reviews

from$33at Epomaker

90-day low

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Keydous NJ98 Hot-Swappable Display Screen with Knob Keyboard Kit

Battery

Keydous NJ98

No reviews

from$109at Mechkeys

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Quick verdict

Which one should you get?

Get the

Epomaker EK21

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

Rules this board out

  • Numpad only. This is not a full keyboard.
$33 at Epomaker

Get the

Keydous NJ98

Battery

Build quality in the top 10% of 98% boards under $150.

Rules this board out

  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
$109 at Mechkeys

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.

Epomaker EK21

Keydous NJ98

  • Layout size

    Numpad

    98%

  • Battery

    1,000 mAh

    8,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    ABS

    Aluminum, Brass, Steel

  • Switch options

    Linear

    Clicky, Linear

  • Display

    None

    Yes

    A case display rather than a typing feature

KeebFinder scores

How we score
  • Epomaker EK21
  • Keydous NJ98
Performance
78
51
Build quality
76
77
Productivity
87
84
Customizability
82
85
Portability
88
65

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Knob
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Epomaker EK21 vs Keydous NJ98 specs

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

12 of 24 specs differ

Epomaker EK21

Keydous NJ98

Typing & switches

Switch options

Linear
Clicky, Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
Yes

Layout

Layout size

Numpad
98%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
Yes

Media keys

No
Yes

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

1,000 mAh
8,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS
Aluminum, Brass, Steel

Plate material

Polycarbonate
Aluminum, Brass, Steel

Keycaps

PBT
PBT

Weight

200 g
1,400 g

Dimensions

29 x 138 x 93 mm
40 x 138 x 403 mm

Backlight

RGB
RGB

Firmware & software

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2025
2023

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.

Epomaker EK212 stores
Keydous NJ982 stores

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