Head to head · Prices checked Oct 31, 2026

Keychron B39 vs WOBKEY Rainy75

Get the WOBKEY Rainy75 for hot-swappable and the 3,500 mAh battery.

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Keychron B39

No reviews

from$54at Keychron

Compare 2 stores

Hot-swappable

WOBKEY Rainy75

5.0 (22)5.0 · 22 reviews

from$139at MK

Compare 5 stores

Quick verdict

Which one should you get?

Get the

Keychron B39

Build quality in the bottom 15% of 96% boards under $100.

Rules this board out

Switches are soldered. Swapping them means soldering.
Low-profile switches and keycaps only. Standard MX keycaps will not fit.
No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

$54 at Keychron

Get the

WOBKEY Rainy75

Hot-swappable

Build quality in the top 5% of 75% boards under $150.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
No numpad.

$139 at MK

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 B39

WOBKEY Rainy75

Layout size
96%
75%
Hot-swappable
No
Yes
Switch changes without soldering
Battery
800 mAh
3,500 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Ergonomics
Alice
Standard

KeebFinder scores

How we score

Keychron B39
WOBKEY Rainy75

Performance: 48
70
Build quality: 44
90
Productivity: 73
94
Customizability: 44
94
Portability: 49
82

What they share

Connection: Bluetooth, 2.4 GHz, Wired

See every spec side by side

Full specs

Keychron B39 vs WOBKEY Rainy75 specs

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

17 of 25 specs differ

Spec

Keychron B39

WOBKEY Rainy75

Typing & switches

Switch options

Clicky, Linear, Tactile

Linear

Hot-swappable

Yes

Mount style

—

Gasket Mount, PCB Mount, Plate Mount

Low profile

Yes

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

96%

75%

Layout standard

ANSI

ANSI, ISO, ISO-DE

Ergonomics

Alice

Standard

Knob

Yes

Display

None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

—

Battery

800 mAh

3,500 mAhBetter

USB-C

Yes

Build & materials

Case material

ABS, Plastic

Aluminum

Plate material

—

FR4, Plastic, Polycarbonate

Keycaps

ABS

PBT

Weight

680 g

1,800 g

Dimensions

—

40 x 320 x 130 mm

Backlight

None

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

Mac & Windows

Yes

Extras

Released

2026

2024

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Keychron B39

No ISO layout at the stores we track.

WOBKEY Rainy75

Input Gear
ISO-DE
Out of stockShips to you

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 B392 stores