Keychron
Keychron J4
Released 2025
Researched from maker specs and published sources. Last checked Oct 18, 2026.
Wireless 80% TKL with hot-swap, QMK and a big battery
A tri-mode tenkeyless with QMK and Launcher, hot-swap sockets and a 3750 mAh battery. No standalone review found; evidence is Keychron's specs and a comparison listing.
Our take, based on research
A sensible wireless TKL on paper. Maker specs and a comparison listing are all the evidence.
Overview
The J4 is the tenkeyless version of the J line. Keychron's page lists double-shot PBT keycaps, 2.4GHz, Bluetooth for three devices and wired, 1000Hz polling over 2.4GHz and wired, QMK with Launcher, 22 backlight effects, 870 g and a 3750 mAh battery rated at up to 288 hours, with a 365.7 x 137.7 mm footprint. Keeb-finder's comparison with the J2 suggests choosing the J4 for a traditional TKL layout with a dedicated function row and navigation cluster, and it points to a steel plate and north-facing RGB; that site does not say how the board performs. No independent typing review turned up.
Pros & Cons
- TKL layout with a dedicated function row and navigation keys (Keeb-finder)
- Tri-mode connection with QMK and Launcher
- Large battery rated at up to 288 hours (Keychron)
- Hot-swap sockets
- No independent review found
- 870 g is heavier than the J2
- Feel and sound not documented by an independent source
Who Is This For?
- Typists who want a TKL with wireless QMK
- Anyone who needs a review-backed purchase
- Buyers who want a metal case
Where to Buy
Dimensions
365.72 x 137.71mm
Weight
870 g / 1.92 lbs
Case Material
Not listed
Connectivity
Both
Plate Options
Case Colors
Software Support
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