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Compare Keychron K4 Ultra vs K4 V2 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron K4 Ultra and Keychron K4 V2 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.

74
Keychron K4 Ultra 8K Wireless Custom Mechanical Keyboard
70
Keychron K4 Wireless Mechanical Keyboard (UK ISO Layout) - Version 2

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0.0 (0)
4.7 (2530)
  • Released in 2026
  • Built with the ANSI layout standard
  • Features N-key rollover
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Uses a Plate Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Runs at a 8000 Hz polling rate
  • Weighs about 1241 g
  • Sized at 31 x 391 x 140 mm
  • Made with a ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, White, South-face, Rgb South-face, White South-face RGB lighting
  • Released in 2020
  • Built with the ISO, JIS, ISO-UK, ISO-DE, ANSI, ISO-Nordic, ISO-ES layout standard
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Runs at a 1000 Hz polling rate
  • Made with a Aluminum, Plastic, ABS case
  • Features ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 88.3
  • Build Quality: 63.4
  • Productivity: 86.5
  • Customizability: 74.9
  • Portability: 56.4
Scores
  • Performance: 64.1
  • Build Quality: 70.4
  • Productivity: 67.7
  • Customizability: 70.4
  • Portability: 55
Name
Keychron K4 Ultra
Name
Keychron K4 V2
Release year
2026
Release year
2020
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
96%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-UK, ISO-DE, ANSI, ISO-Nordic, ISO-ES
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
1000 Hz
Battery capacity
4000 mAh
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Plate Mount
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, South-face, White South-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
ABS
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
ABS
Dimensions
31 x 391 x 140 mm
Dimensions
-
Weight
1241g
Weight
-
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