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Head to head · Prices checked Nov 7, 2026

MelGeek Mojo68 vs MMD KM21 Ultra

Get the MelGeek Mojo68 for the 4,000 mAh battery. Get the MMD KM21 Ultra for knob.

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Quick verdict

Which one should you get?

Get the

MelGeek Mojo68

Battery

Build quality in the top 35% of 65% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • 65% layout. No function row and no numpad.
$125 at MK

Get the

MMD KM21 Ultra

Knob

Build quality in the top 15% of Numpad boards under $100.

Rules this board out

  • Numpad only. This is not a full keyboard.
$89 at MonacoKeys

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.

MelGeek Mojo68

MMD KM21 Ultra

  • Layout size

    65%

    Numpad

  • Battery

    4,000 mAh

    980 mAh

    A larger battery means fewer cables during the day

  • Case material

    Plastic

    Aluminum

  • Mount style

    Gasket Mount, Plate Mount

    Top Mount

  • Knob

    No

    Yes

KeebFinder scores

How we score
  • MelGeek Mojo68
  • MMD KM21 Ultra
Performance
71
66
Build quality
70
81
Productivity
82
89
Customizability
75
89
Portability
89
85

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
  • Plate material: Plastic
See every spec side by side

Full specs

MelGeek Mojo68 vs MMD KM21 Ultra specs

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

12 of 27 specs differ

MelGeek Mojo68

MMD KM21 Ultra

Typing & switches

Switch options

Clicky, Linear, Silent, Tactile
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount, Plate Mount
Top Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

65%
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

4,000 mAhBetter
980 mAh

USB-C

Yes
Yes

Build & materials

Case material

Plastic
Aluminum

Plate material

Plastic
Plastic

Keycaps

ABS, PBT
—

Weight

1,500 g
—

Dimensions

31 x 122 x 326 mm
—

Typing angle

6°, 7°
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

Yes
No

Mac & Windows

Yes
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.

MelGeek Mojo683 stores
MMD KM21 Ultra2 stores

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