Compare Ajazz AK820 Max vs Keychron J2 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Ajazz AK820 Max and Keychron J2 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.

Model
	69	78	Select a keyboard to compare
Rating	4.3 stars (16 reviews)	4.3 stars (9 reviews)
Purchase Options
Main differences	Released in 2024 Has Magnetic, Linear switch options Comes with a knob Includes a Yes, TFT display Compatible with both Mac and Windows Connects via USB-C Utilizes Hall effect sensors Uses a Gasket Mount mounting style Equipped with a 4000 mAh battery Weighs about 850 g Sized at 20 x 333 x 143 mm Made with a ABS, PBT case Offers Yes, Rgb RGB lighting	Released in 2025 Has Linear, Tactile, Clicky switch options Includes a No display Provides dedicated media keys Supports QMK firmware Supports VIA configuration Runs at a 1000 Hz polling rate Equipped with a 3750 mAh battery Offers Yes, Rgb, White RGB lighting
Score	Scores Performance: 59.6 Build Quality: 55.4 Productivity: 85 Customizability: 75.5 Portability: 81.5	Scores Performance: 70 Build Quality: 71.2 Productivity: 73.8 Customizability: 86.7 Portability: 73.4
Name	Name Ajazz AK820 Max	Name Keychron J2
Release year	Release year 2024	Release year 2025
Switch Options	Switch Options Magnetic, Linear	Switch Options Linear, Tactile, Clicky
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
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 TFT	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 4000 mAh	Battery capacity 3750 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
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, PBT	Case Material -
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 20 x 333 x 143 mm	Dimensions -
Weight	Weight 850g	Weight -