Compare Ajazz AKC087 vs Keychron J4 QMK Differences Side by Side

Explore the comprehensive side-by-side comparison of the Ajazz AKC087 and Keychron J4 QMK and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

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Main differences	Released in 2023 Has Tactile switch options Uses a Gasket Mount mounting style Equipped with a 2000 mAh battery Weighs about 2110 g Sized at 43 x 138 x 367 mm Made with a Metal, Plastic case Offers Yes, Rgb RGB lighting	Released in 2025 Supports QMK firmware Features N-key rollover Has built-in sound dampening Runs at a 1000 Hz polling rate Equipped with a 4000 mAh battery Weighs about 870 g Sized at 38 x 366 x 138 mm Made with a ABS case Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Score	Scores Performance: 48.3 Build Quality: 50.1 Productivity: 65.7 Customizability: 73.7 Portability: 73	Scores Performance: 79.1 Build Quality: 60.8 Productivity: 84.5 Customizability: 74.6 Portability: 73.3
Name	Name Ajazz AKC087	Name Keychron J4 QMK
Release year	Release year 2023	Release year 2025
Switch Options	Switch Options Tactile	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 80%	Layout Size 80%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate 1000 Hz
Battery capacity	Battery capacity 2000 mAh	Battery capacity 4000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style -
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb, White, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Metal, Plastic	Case Material ABS
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 43 x 138 x 367 mm	Dimensions 38 x 366 x 138 mm
Weight	Weight 2110g	Weight 870g