Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Oct 21, 2026

Keychron J2 vs Q4

Get the Keychron Q4 for knob.

Keychron J2 QMK Wireless Mechanical Keyboard

Keychron J2

4.4 · 11 reviews

from$59at Keychron

Shop nowCompare 2 stores
Keychron Q4 QMK Custom Mechanical Keyboard

Knob

Keychron Q4

4.7 · 10 reviews

from$59at Keychron

Shop nowCompare 3 stores

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 J2

Keychron Q4

  • Layout size

    75%

    60%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

  • Knob

    No

    Yes

  • Layout standard

    ANSI

    ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, JIS

  • Keycaps

    PBT

    ABS, PBT

KeebFinder scores

How we score
  • Keychron J2
  • Keychron Q4
Performance
70
66
Build quality
71
90
Productivity
74
95
Customizability
86
98
Portability
73
70

What they share

  • Hot-swappable
  • Max polling rate: 1,000 Hz
  • Switch options: Clicky, Linear, Tactile
  • QMK
  • VIA
  • Sound dampening
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Keychron J2

4.4

11 owner reviews

Praise
“I absolutely love this keyboard. It sounds amazing and the red switches are so smooth in feel. The colours are also great.”
WojciechVerified buyer· via Keychron
Critique
“The keyboard is nice, but it took over 3 weeks of shipping to arrive. On their website it says they deliver in a week or under to the US.”
JaydenVerified buyer· via Keychron

Keychron Q4

4.7

10 owner reviews

Praise
“Perfect keyboard, sounds lovely, feels lovely, i just fee like the white keys are a lot more cream than pictured. Not an issue though! Just a little annoying haha”
E.B.Verified buyer· via Keychron

Full specs

Keychron J2 vs Q4 specs

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

10 of 26 specs differ

Keychron J2

Keychron Q4

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

—
Gasket Mount, Plate Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

75%
60%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, JIS

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

1,000 Hz
1,000 Hz

Battery

3,750 mAh
Wired only

USB-C

No
Yes

Build & materials

Case material

—
Aluminum

Plate material

—
Steel

Keycaps

PBT
ABS, PBT

Weight

—
1,500 g

Dimensions

—
20 x 121 x 303 mm

Typing angle

—
7°

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

Mac & Windows

No
Yes

Extras

Released

2025
2022

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

Keychron J23 stores
  • KeychronHK

    In stock
    $59Visit
  • Keychron (DE)DE

    In stock
    $105Visit
  • AmazonGlobal

    Check price
    ~$59Visit
Keychron Q44 stores
  • KeychronHK

    In stock
    $59Visit
  • MKUS

    In stock
    $111Visit
  • Keychron (DE)DE

    In stock
    $119Visit
  • AmazonGlobal

    Check price
    Visit

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.

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.