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Head to head · Prices checked Oct 28, 2026

Keychron B31 vs MK LowKey70

Get the MK LowKey70 for hot-swappable and the 2,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Keychron B31

Build quality in the bottom 20% of 75% boards under $50.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

Get the

MK LowKey70

Hot-swappable

Build quality in the bottom 35% of 75% boards under $50.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.

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.

Keychron B31

MK LowKey70

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Battery

    800 mAh

    2,000 mAh

    A larger battery means fewer cables during the day

  • Low profile

    No

    Yes

  • Case material

    ABS, Plastic

    Aluminum

KeebFinder scores

How we score
  • Keychron B31
  • MK LowKey70
Performance
59
64
Build quality
52
66
Productivity
69
76
Customizability
47
73
Portability
79
83

What they share

  • Layout size: 75%
  • Switch options: Clicky, Linear, Tactile
See every spec side by side

Full specs

Keychron B31 vs MK LowKey70 specs

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

10 of 23 specs differ

Keychron B31

MK LowKey70

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

No
Yes

Mount style

PCB Mount
Plate Mount

Low profile

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

1,000 Hz
—

Battery

800 mAh
2,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, Plastic
Aluminum

Plate material

—
Aluminum

Keycaps

ABS
PBT

Weight

520 g
—

Dimensions

26 x 138 x 327 mm
—

Typing angle

5°
—

Backlight

None
RGB

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2026
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.

Keychron B314 stores
MK LowKey702 stores

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