Compare Keychron K4 Pro vs Redragon SPHINX K503 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron K4 Pro and Redragon SPHINX K503 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	4.7 stars (7 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2022 Has Linear, Tactile, Clicky switch options Supports hot-swappable switches Available in a 96% layout Built with the ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK layout standard Compatible with both Mac and Windows Provides dedicated media keys Connects via USB-C Supports QMK firmware Supports VIA configuration Includes screw-in stabilizers Has built-in sound dampening Uses a Tray Mount mounting style Supports Bluetooth, Wired, Wireless connectivity Runs at a 1000 Hz polling rate Equipped with a 4000 mAh battery Weighs about 1280 g Sized at 31 x 391 x 139 mm Made with a Plastic, ABS case Features PBT, ABS keycaps Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face RGB lighting	Released in 2025 Available in a 100% layout Built with the ISO-FR, ISO layout standard Supports Wired, Wired only connectivity Weighs about 1000 g Sized at 440 x 180 x 40 mm Offers Yes, Rgb RGB lighting
Score	Scores Performance: 81.3 Build Quality: 83.9 Productivity: 94.7 Customizability: 97.3 Portability: 53.6	Scores Performance: 74.1 Build Quality: 43.1 Productivity: 49.5 Customizability: 46.8 Portability: 40.2
Name	Name Keychron K4 Pro	Name Redragon SPHINX K503
Release year	Release year 2022	Release year 2025
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 96%	Layout Size 100%
Layout Standard	Layout Standard ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK	Layout Standard ISO-FR, ISO
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, Wired, Wireless	Connection Wired, Wired only
Polling Rate	Polling Rate 1000 Hz	Polling Rate -
Battery capacity	Battery capacity 4000 mAh	Battery capacity -
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 Tray Mount	Mount Style -
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, White, South-face, White South-face	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic, ABS	Case Material -
Keycaps Material	Keycaps Material PBT, ABS	Keycaps Material -
Dimensions	Dimensions 31 x 391 x 139 mm	Dimensions 440 x 180 x 40 mm
Weight	Weight 1280g	Weight 1000g