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Head to head · Prices checked Nov 2, 2026

MMD KM21 Ultra vs Redragon SHIVA K525 MAX

Get the MMD KM21 Ultra for hot-swappable and qmk.

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Quick verdict

Which one should you get?

Get the

MMD KM21 Ultra

Hot-swappable

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

Get the

Redragon SHIVA K525 MAX

Build quality in the bottom 40% of Numpad boards under $50.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

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.

MMD KM21 Ultra

Redragon SHIVA K525 MAX

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Display

    None

    LED

    A case display rather than a typing feature

  • QMK

    Yes

    No

    The deep option when you want to remap every key

  • VIA

    Yes

    No

    GUI remapping without compiling firmware

  • Sound dampening

    Yes

    No

KeebFinder scores

How we score
  • MMD KM21 Ultra
  • Redragon SHIVA K525 MAX
Performance
66
59
Build quality
81
56
Productivity
89
54
Customizability
89
68
Portability
86
81

What they share

  • Layout size: Numpad
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Knob
See every spec side by side

Full specs

MMD KM21 Ultra vs Redragon SHIVA K525 MAX specs

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

7 of 21 specs differ

MMD KM21 Ultra

Redragon SHIVA K525 MAX

Typing & switches

Hot-swappable

Yes
No

Mount style

Top Mount
—

Sound dampening

Yes
No

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
LED

Media keys

No
Yes

Connectivity & battery

Connection

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

Battery

980 mAh
—

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
—

Plate material

Plastic
—

Weight

—
1,000 g

Dimensions

—
37 x 445 x 189 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

VIA

Yes
No

Mac & Windows

Yes
No

Extras

Released

2026
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.

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