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Compare Firstblood B21 vs Keychron K3 Pro Differences Side by Side

Explore the comprehensive side-by-side comparison of the Firstblood B21 and Keychron K3 Pro 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.

FirstBlood B21 Retro Mechanical Keyboard with Cherry Switch
87
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection

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0.0 (0)
4.7 (52)
  • Released in 2024
  • Has Clicky, Tactile, Linear switch options
  • Available in a 65% layout
  • Built with the ANSI layout standard
  • Supports Bluetooth, Wired, Wireless connectivity
  • Weighs about 818 g
  • Sized at 46 x 148 x 317 mm
  • Made with a Aluminum case
  • Features PBT keycaps
  • Offers Yes, White RGB lighting
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Features a low-profile design
  • Supports hot-swappable switches
  • Available in a 75% layout
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard
  • Provides dedicated media keys
  • Supports QMK firmware
  • Supports VIA configuration
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Runs at a 1000 Hz polling rate
  • Equipped with a 1550 mAh battery
  • Weighs about 930 g
  • Sized at 15 x 306 x 116 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 56.4
  • Build Quality: 53.7
  • Productivity: 54.5
  • Customizability: 46.2
  • Portability: 83.1
Scores
  • Performance: 81.1
  • Build Quality: 81.5
  • Productivity: 80
  • Customizability: 89.3
  • Portability: 77.2
Name
Firstblood B21
Name
Keychron K3 Pro
Release year
2024
Release year
2022
Switch Options
Clicky, Tactile, Linear
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
65%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI
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, Wired, Wireless
Connection
Bluetooth, Wired, Wireless, 2.4 GHz
Polling Rate
-
Polling Rate
1000 Hz
Battery capacity
-
Battery capacity
1550 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
-
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
White
Backlight
 
Rgb, South-face, White, North-face
Case Colors
Case Colors
Case Material
Aluminum
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
ABS, PBT
Dimensions
46 x 148 x 317 mm
Dimensions
15 x 306 x 116 mm
Weight
818g
Weight
930g
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