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Keychron B3 Pro Ultra-Slim Wireless Keyboard

Keychron B3 Pro

The Keychron B3 Pro UltraSlim US is a compact 75% keyboard designed for users who want a slim profile with versatile connectivity. It suits office workers or hobbyists needing a wireless option with multiple connection modes. Its layout balances key availability and desk space, making it practical for daily typing and moderate customization.</p... Read more
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Keychron B3 Pro Ultra-Slim Kabellose Tastatur (US ANSI Layout)

Keychron (DE)
Keychron (DE)
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$56
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Compare specs

Compare Keychron B3 Pro vs MK LowKey70 vs Redragon BK7114 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron B3 ProMK LowKey70Redragon BK7114
Keychron B3 Pro Ultra-Slim Wireless Keyboard
73
MK LowKey70 Black Aluminum 75% Hotswap Bluetooth RGB Low Profile Mac Mechanical Keyboard
BK7114 Scissor Low-Profile Slim Wireless Keyboard - Image: 3
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  • Released in 2025
  • Has Linear, Tactile, Clicky switch options
  • Runs at a 1000 Hz polling rate
  • Equipped with a 1200 mAh battery
  • Weighs about 410 g
  • Sized at 3 x 100 x 380 mm
  • Made with a ABS case
  • Features ABS keycaps
  • Released in 2023
  • Has Clicky, Tactile, Linear switch options
  • Supports hot-swappable switches
  • Uses a Plate Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 2000 mAh battery
  • Made with a Aluminum case
  • Features PBT keycaps
  • Offers Yes, Rgb RGB lighting
  • Released in 2024
  • Available in a 90% layout
  • Uses a Bottom Mount mounting style
  • Weighs about 560 g
  • Sized at 24 x 382 x 24 mm
  • Made with a Plastic case
Scores
  • Performance: 50.4
  • Build Quality: 43.7
  • Productivity: 70.5
  • Customizability: 48.7
  • Portability: 78.9
Scores
  • Performance: 63.9
  • Build Quality: 67.4
  • Productivity: 76
  • Customizability: 75.3
  • Portability: 83
Scores
  • Performance: 50.2
  • Build Quality: 46.5
  • Productivity: 70
  • Customizability: 42.3
  • Portability: 51.4
Name
Keychron B3 Pro
Name
MK LowKey70
Name
Redragon BK7114
Release year
2025
Release year
2023
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Clicky, Tactile, Linear
Switch Options
-
Profile
Low Profile
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Size
90%
Layout Standard
ANSI
Layout Standard
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, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
-
Polling Rate
-
Battery capacity
1200 mAh
Battery capacity
2000 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
Bottom Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Rgb
Backlight
 
Case Colors
Case Colors
Case Colors
Case Material
ABS
Case Material
Aluminum
Case Material
Plastic
Keycaps Material
ABS
Keycaps Material
PBT
Keycaps Material
-
Dimensions
3 x 100 x 380 mm
Dimensions
-
Dimensions
24 x 382 x 24 mm
Weight
410g
Weight
-
Weight
560g
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Product Description

The Keychron B3 Pro UltraSlim US is a compact 75% keyboard designed for users who want a slim profile with versatile connectivity. It suits office workers or hobbyists needing a wireless option with multiple connection modes. Its layout balances key availability and desk space, making it practical for daily typing and moderate customization.

Key Features

  • Supports 2.4 GHz wireless, Bluetooth 5.2, and wired USB-C connections, offering flexibility for different devices and environments.
  • Ultra-slim design reduces desk clutter and improves portability without sacrificing essential keys found in a 75% layout.

Connectivity

The keyboard can connect via three methods: 2.4 GHz wireless for stable, low-latency use; Bluetooth 5.2 for easy pairing with multiple devices; and wired USB-C for zero latency and charging. This variety allows switching between workstations or devices without needing separate keyboards.

Trade-offs

  • The ultra-slim form factor may limit key travel and tactile feedback compared to thicker mechanical keyboards, which could affect typing feel for some users.
  • Details on switch types, build materials, and typing acoustics are unknown, making it harder to assess durability and sound profile.
  • No information on firmware customization or key remapping is available, which may restrict advanced user customization.

Use Cases

This keyboard fits users who prioritize a compact, wireless setup with flexible connectivity options. It is less ideal for those seeking deep customization, robust build details, or specific typing feedback, as these aspects are not clearly documented.

Frequently Asked Questions (FAQ)

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