Head to head · Prices checked Nov 11, 2026

Keychron J4 vs Redragon OTIIM K729

Get the Keychron J4 for qmk. Get the Redragon OTIIM K729 for knob.

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QMK

from$59at Keychron

Knob

from$54at Redragon

Quick verdict

Which one should you get?

Get the

Keychron J4

QMK

Build quality in the top 30% of 80% boards under $100.

Rules this board out

North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

$59 at Keychron

Get the

Redragon OTIIM K729

Knob

Build quality in the top 45% of 80% boards under $100.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

$54 at Redragon

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 J4

Redragon OTIIM K729

Connection
Bluetooth, 2.4 GHz, Wired
Wired
Wireless for several devices and wired for lower latency
Case material
ABS
Plastic
Knob
No
Yes
Weight
870 g
880 g
Heavier boards stay planted and lighter ones travel
QMK
Yes
No
The deep option when you want to remap every key

KeebFinder scores

How we score

Keychron J4
Redragon OTIIM K729

Performance: 82
79
Build quality: 71
63
Productivity: 89
84
Customizability: 89
68
Portability: 73
58

What they share

Layout size: 80%
Hot-swappable
Max polling rate: 1,000 Hz
Sound dampening
Keycaps: PBT

See every spec side by side

Full specs

Keychron J4 vs Redragon OTIIM K729 specs

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

9 of 26 specs differ

Spec

Keychron J4

Redragon OTIIM K729

Typing & switches

Switch options

Clicky, Linear, Tactile

—

Hot-swappable

Yes

Mount style

—

Gasket Mount

Sound dampening

Yes

Layout

Layout size

80%

Layout standard

ANSI

Ergonomics

Standard

Knob

Yes

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Wired

Max polling rate

1,000 Hz

Battery

4,000 mAh

Wired only

USB-C

Yes

Build & materials

Case material

ABS

Plastic

Plate material

Steel

—

Keycaps

PBT

Weight

870 g

880 g

Dimensions

38 x 366 x 138 mm

41 x 367 x 146 mm

Typing angle

10°

—

Backlight

RGB, north-facing

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2025

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

Keychron J43 stores