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Compare Keychron B4 Pro vs K4 HE Differences Side by Side

This comparison is for buyers deciding between two 96% layout Keychron keyboards at opposite ends of the spectrum. The B4 Pro is an ultra-slim, low-profile option at a lower price point, while the K4 HE is a heavier, feature-packed board with magnetic switches. The decision hinges on whether you prioritize a thin, lightweight design for basic use or are willing to invest in advanced gaming features, extensive customization, and premium materials.

Keychron B4 Pro Ultra-Slim Wireless Keyboard
91
Keychron K4 HE Wireless Magnetic Switch Custom Keyboard ISO Layout Collection

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4.3 (13)
  • Has Linear, Tactile, Clicky switch options
  • Features a low-profile design
  • Built with the ANSI layout standard
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 800 mAh battery
  • Weighs about 495 g
  • Sized at -1 x -1 x -1 mm
  • Made with a ABS case
  • Features ABS keycaps
  • Offers No RGB lighting
  • Has Magnetic, Linear, Tactile, Clicky switch options
  • Supports hot-swappable switches
  • Built with the ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, ANSI layout standard
  • Utilizes Hall effect sensors
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • Enables rapid trigger functionality
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Equipped with a 4000 mAh battery
  • Weighs about 1090 g
  • Sized at 41 x 377 x 126 mm
  • Made with a Plastic, Aluminum, Wood, ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 49.2
  • Build Quality: 43.4
  • Productivity: 68.1
  • Customizability: 42.2
  • Portability: 51.5
Scores
  • Performance: 92.4
  • Build Quality: 87.1
  • Productivity: 94.2
  • Customizability: 89.8
  • Portability: 56.4
Name
Keychron B4 Pro
Name
Keychron K4 HE
Release year
2025
Release year
2025
Switch Options
Linear, Tactile, Clicky
Switch Options
Magnetic, Linear, Tactile, Clicky
Profile
Low Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
96%
Layout Size
96%
Layout Standard
ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-CH, ISO-ES, ISO-FR, ISO-SW, ISO-Nordic, 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, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless, 2.4 GHz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
800 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
-
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
ABS
Case Material
Plastic, Aluminum, Wood, ABS
Keycaps Material
ABS
Keycaps Material
PBT
Dimensions
-1 x -1 x -1 mm
Dimensions
41 x 377 x 126 mm
Weight
495g
Weight
1090g
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Pros and Trade-offs

Your budget and core needs dictate the choice. If you want a capable, no-fuss wireless keyboard that's easy to carry and costs less, the Keychron B4 Pro is a sensible pick. If you are an enthusiast, gamer, or power user who values cutting-edge switch technology, deep customization, and a premium metal build, the Keychron K4 HE justifies its higher cost with a superior feature set.

Keychron B4 Pro

  • +Extremely lightweight at 495g and ultra-slim with a 9.6mm thickness.
  • +Claims a 300-hour battery life for extended wireless use.
  • +Includes a protective, washable silicone key skin.
  • +Lower price point for a 96% layout with triple-mode connectivity.
  • +Low-profile design with a 3-degree typing angle for a flatter typing experience.
  • −Uses ABS keycaps and an ABS case, which are less durable than PBT and aluminum.
  • −Lacks hot-swappable switches and advanced programmability like QMK/VIA.
  • −No RGB backlighting.
  • −The vendor description mentions it is often backordered.

Keychron K4 HE

  • +Features advanced Gateron Double-Rail Magnetic Switches with adjustable actuation (0.2-3.8mm).
  • +Premium construction with an aluminum case, aluminum plate, and PBT keycaps.
  • +Extensive customization via hot-swappable switches, QMK/VIA support, and a multi-layered foam kit (EVA, EPDM, silicone).
  • +Includes gaming features like Rapid Trigger, Analog Mode, and Dynamic Keystrokes.
  • +North-facing RGB backlighting with multiple effect modes.
  • −Significantly heavier at 1090g, making it less portable.
  • −Substantially higher price point.
  • −Compatible only with specific Gateron Double-Rail Magnetic switches, limiting switch swap options.
  • −Wireless battery life is up to 110 hours, less than the B4 Pro's claimed duration.

Which Keyboard Is Better for Your Needs?

The K4 HE is the clear choice for gaming, programming, modding, and content creation due to its magnetic switch technology, deep software customization, and hot-swappable design. The B4 Pro wins for travel thanks to its significantly lighter weight and slimmer profile. For office use, it's a tie; the B4 Pro offers better battery life and portability, while the K4 HE provides more durable keycaps and a sturdier build.

GamingKeychron K4 HE
  • •The K4 HE features adjustable actuation points (0.2-3.8mm) and Rapid Trigger for competitive play.
  • •It includes gaming-centric features like Last Key Priority (LKP), Snap Click, and Analog Mode.
  • •Its 1000 Hz polling rate in both wired and 2.4 GHz modes matches the B4 Pro, but with lower latency performance according to the manufacturer.
OfficeTie
  • •Both support Mac and Windows layouts and connect via Bluetooth for multi-device use.
  • •The B4 Pro's 300-hour claimed battery life and 495g weight offer better portability for shared workspaces.
  • •The K4 HE's PBT keycaps are more oil-resistant for long-term use, and its 4000mAh battery offers up to 110 hours of wireless use.
ProgrammingKeychron K4 HE
  • •The K4 HE offers extensive key remapping and macro programming via QMK and VIA support.
  • •Its hot-swappable design allows for easy switch changes to suit typing preferences.
  • •The inclusion of a full navigation cluster (Home, End, etc.) in a 96% layout is shared, but the K4 HE's programmability is superior.
TravelKeychron B4 Pro
  • •The B4 Pro weighs 495g, less than half the K4 HE's 1090g.
  • •Its ultra-slim, low-profile design at 9.6mm thickness is more packable.
  • •The claimed 300-hour battery life reduces charging needs on the go.
ModdingKeychron K4 HE
  • •The K4 HE is hot-swappable for magnetic switches and features screw-in stabilizers.
  • •It has a tray mount design with an aluminum plate and multiple foam layers (EVA, EPDM, silicone) for sound modification.
  • •It supports open-source QMK firmware for deep customization, which the B4 Pro does not.
Content CreationKeychron K4 HE
  • •The K4 HE's Dynamic Keystrokes feature allows assigning up to 4 actions per key based on press depth, useful for shortcuts.
  • •North-facing RGB backlighting with multiple modes can be tuned for aesthetic setups.
  • •Programmable macros via QMK/Launcher support streamline complex editing workflows.

Frequently Asked Questions (FAQ)

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