Compare Keychron B39 vs K4 HE Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron B39 and Keychron K4 HE 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
		92	Select a keyboard to compare
Rating	0.0 stars (0 reviews)	4.3 stars (22 reviews)
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Main differences	Released in 2026 Has Linear, Tactile, Clicky switch options Features a low-profile design Built with the ANSI layout standard Offers Alice ergonomics Comes with a knob Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 800 mAh battery Weighs about 680 g Made with a Plastic, ABS case Features ABS keycaps Offers No RGB lighting	Released in 2025 Has Magnetic, Linear, Tactile, Clicky switch options Supports hot-swappable switches Built with the ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ANSI, ISO-SW, ISO-Nordic layout standard Offers Normal ergonomics Utilizes Hall effect sensors Supports QMK firmware Supports VIA configuration Features N-key rollover Enables rapid trigger functionality Includes screw-in stabilizers Has built-in sound dampening Uses a Tray Mount mounting style Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity Equipped with a 4000 mAh battery Weighs about 1090 g Sized at 31 x 126 x 373 mm Made with a Plastic, Aluminum, ABS, Wood case Features PBT keycaps Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Score	Scores Performance: 49.1 Build Quality: 45.2 Productivity: 74.5 Customizability: 46 Portability: 49.5	Scores Performance: 92.4 Build Quality: 87 Productivity: 94.1 Customizability: 89.8 Portability: 56.3
Name	Name Keychron B39	Name Keychron K4 HE
Release year	Release year 2026	Release year 2025
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Magnetic, Linear, Tactile, Clicky
Profile	Profile Low Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 96%	Layout Size 96%
Layout Standard	Layout Standard ANSI	Layout Standard ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ANSI, ISO-SW, ISO-Nordic
Layout Ergonomics	Layout Ergonomics Alice	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, Wired, Wireless, 2.4 GHz
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 800 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 -	Mount Style Tray Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight	Backlight Rgb, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic, ABS	Case Material Plastic, Aluminum, ABS, Wood
Keycaps Material	Keycaps Material ABS	Keycaps Material PBT
Dimensions	Dimensions -	Dimensions 31 x 126 x 373 mm
Weight	Weight 680g	Weight 1090g