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

Head to head · Prices checked Oct 25, 2026

Cidoo ABM081 Stellar vs Epomaker EK21

Get the Cidoo ABM081 Stellar for the 3,000 mAh battery. Get the Epomaker EK21 for knob.

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

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.

Cidoo ABM081 Stellar

Epomaker EK21

  • Layout size

    75%

    Numpad

  • Battery

    3,000 mAh

    1,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum

    ABS

  • Knob

    No

    Yes

  • Display

    TFT

    None

    A case display rather than a typing feature

KeebFinder scores

How we score
  • Cidoo ABM081 Stellar
  • Epomaker EK21
Performance
51
79
Build quality
76
77
Productivity
69
88
Customizability
82
82
Portability
75
88

What they share

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

Full specs

Cidoo ABM081 Stellar vs Epomaker EK21 specs

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

9 of 23 specs differ

Cidoo ABM081 Stellar

Epomaker EK21

Typing & switches

Switch options

—
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

75%
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

TFT
None

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

3,000 mAhBetter
1,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS

Plate material

—
Polycarbonate

Keycaps

PBT
PBT

Weight

—
200 g

Dimensions

—
29 x 138 x 93 mm

Backlight

RGB, south-facing
RGB

Firmware & software

VIA

Yes
Yes

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2024
2025

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.

Still torn?

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