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Keychron B5 Pro Ultra-Slim Wireless Keyboard

Keychron B5 Pro Mechanical Keyboard

The Keychron B5 Pro UltraSlim US is a compact wireless mechanical keyboard designed for users who want a slim profile with versatile connectivity. It suits professionals or hobbyists who need a portable board that can switch between wired and wireless modes. Its low height and multi-mode support make it practical for both desk setups and mobile use.</p... Read more
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Keychron B5 Pro Ultra-Slim Wireless Keyboard (US ANSI Layout)

Keychron (DE)
Keychron (DE)
No shipping to US
$65
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Compare Keychron B5 Pro vs Keychron B6 Pro vs Zerodate K98 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron B5 ProKeychron B6 ProZerodate K98
Keychron B5 Pro Ultra-Slim Wireless Keyboard
Keychron B6 Pro Ultra-Slim Wireless Keyboard ISO Layout Collection
80
[In Stock] Zerodate K98 Full RGB Wired Mechanical Keyboard
0.0 (0)
4.8 (24)
0.0 (0)
  • Sized at 10 x 438 x 121 mm
  • Offers No RGB lighting
  • Released in 2024
  • Features a low-profile design
  • Built with the ISO, JIS, ANSI layout standard
  • Uses a Plate Mount mounting style
  • Sized at 5 x 429 x 130 mm
  • Made with a Plastic, ABS case
  • Offers Yes, North-face RGB lighting
  • Has Linear switch options
  • Available in a 98% layout
  • Comes with a knob
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • Supports Wired, Wired only connectivity
  • Weighs about 731.6 g
  • Sized at 36 x 385 x 136 mm
  • Offers Yes, Rgb RGB lighting
Scores
  • Performance: 49.4
  • Build Quality: 43.5
  • Productivity: 69.3
  • Customizability: 47.7
  • Portability: 51.8
Scores
  • Performance: 52.1
  • Build Quality: 45.6
  • Productivity: 67.3
  • Customizability: 52.4
  • Portability: 51.1
Scores
  • Performance: 82.6
  • Build Quality: 73.3
  • Productivity: 79.6
  • Customizability: 86.2
  • Portability: 42.6
Name
Keychron B5 Pro
Name
Keychron B6 Pro
Name
Zerodate K98
Release year
2025
Release year
2024
Release year
2025
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear
Profile
Normal Profile
Profile
Low Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
100%
Layout Size
98%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
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
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Wired, Wired only
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1200 mAh
Battery capacity
1200 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
Plate Mount
Mount Style
-
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
North-face
Backlight
 
Rgb
Case Colors
Case Colors
Case Colors
Case Material
ABS
Case Material
Plastic, ABS
Case Material
ABS
Keycaps Material
ABS
Keycaps Material
ABS
Keycaps Material
ABS
Dimensions
10 x 438 x 121 mm
Dimensions
5 x 429 x 130 mm
Dimensions
36 x 385 x 136 mm
Weight
623g
Weight
623g
Weight
731.6g
*Something incorrect or missing? Please
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Product Description

The Keychron B5 Pro UltraSlim US is a compact wireless mechanical keyboard designed for users who want a slim profile with versatile connectivity. It suits professionals or hobbyists who need a portable board that can switch between wired and wireless modes. Its low height and multi-mode support make it practical for both desk setups and mobile use.

Key Features

  • Supports 2.4 GHz wireless, Bluetooth, and wired USB-C connections, allowing flexible use across devices and environments.
  • Ultra-slim design reduces desk clutter and improves portability without sacrificing full key functionality.

Connectivity

The B5 Pro offers three connection options. Use 2.4 GHz wireless for a stable, low-latency link suitable for work or light gaming. Bluetooth mode enables easy pairing with multiple devices but may have variable latency. Wired USB-C connection provides a reliable, no-delay experience and charges the keyboard simultaneously.

Trade-offs

  • The ultra-slim form factor may limit key travel and tactile feedback compared to thicker mechanical keyboards, which could affect typing comfort for some users.
  • Specific details about switch types, key feel, or sound profile are unknown, making it harder to assess typing experience fully.
  • Firmware features and customization options are not specified, which may limit advanced key remapping or macro capabilities.

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