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Head to head · Prices checked Oct 21, 2026

Keychron J4 vs K8

Get the Keychron J4 for qmk and via.

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

Keychron K8

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

  • QMK

    Yes

    No

  • VIA

    Yes

    No

  • Sound dampening

    Yes

    No

  • Layout standard

    ANSI

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

KeebFinder scores

How we score
  • Keychron J4
  • Keychron K8
Performance
70
62
Build quality
71
66
Productivity
74
65
Customizability
86
66
Portability
66
73

What they share

  • Layout size: 80%
  • Hot-swappable
  • Battery: 4,000 mAh
  • Switch options: Clicky, Linear, Tactile
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 J4

No owner reviews collected yet.

Keychron K8

4.8

623 owner reviews

Praise
“This keyboard is exactly was I was looking for. Great keystroke, ability to be used wirelessly and wired, backlight, Mac and Windows Key Caps for a great price”
Markus K.Verified buyer· via Keychron

Full specs

Keychron J4 vs K8 specs

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

9 of 21 specs differ

Keychron J4

Keychron K8

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

—
Tray Mount

Sound dampening

Yes
No

Layout

Layout size

80%
80%

Layout standard

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

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

4,000 mAh
4,000 mAh

USB-C

No
Yes

Build & materials

Case material

—
Aluminum, Plastic

Plate material

Steel
—

Keycaps

PBT
ABS

Backlight

RGB, north-facing
RGB, north-facing

Firmware & software

QMK

Yes
No

VIA

Yes
No

Mac & Windows

No
Yes

Extras

Released

2025
2020

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

Keychron J42 stores
  • KeychronHK

    In stock
    $59Visit
  • AmazonGlobal

    Check price
    Visit
Keychron K83 stores
  • KeychronHK

    In stock
    $59Visit
  • AmazonGlobal

    Check price
    Visit
  • Keychron (DE)DE

    Out of stock
    $111Visit

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