Keychron B4 Pro vs K4 HEBudget Low-Profile vs Premium Magnetic
Choose the B4 Pro for a budget-friendly, portable low-profile board, or the K4 HE for a premium, customizable keyboard with advanced magnetic switch features.
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from$39at Keychron
4.0 (11)4.0 · 11 reviews
from$118at MK
Which one should you get?
Get the
Keychron B4 Pro
Budget Low-Profile
Build quality in the bottom 10% of 96% boards under $100.
- 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.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Get the
Keychron K4 HE
Premium Magnetic
Build quality in the top 10% of 96% boards under $150.
- 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).
- Magnetic switches only. Standard MX switches will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
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.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron B4 Pro
Keychron K4 HE
Hall effect (magnetic)
No
Yes
Adjustable actuation helps in games and not in normal typing
Rapid trigger
No
Yes
Faster resets help in games and not in normal typing
Connection
Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired, 2.4 GHz
Wireless for several devices and wired for lower latency
Hot-swappable
No
Yes
Switch changes without soldering
Battery
800 mAh
4,000 mAh
A larger battery means fewer cables during the day
- Keychron B4 Pro
- Keychron K4 HE
- Performance
- 5192
- Build quality
- 4387
- Productivity
- 7094
- Customizability
- 4389
- Portability
- 5256
- Layout size: 96%
- Max polling rate: 1,000 Hz
What will you mostly use it for?
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.
Pick the Keychron 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.
Keychron B4 Pro vs K4 HE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
19 of 28 specs differ
Keychron B4 Pro
Keychron K4 HE
Switch options
Hall effect (magnetic)
Rapid trigger
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B4 Pro
No ISO layout at the stores we track.
Keychron K4 HE
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-CH
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-CH
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Keychron B4 Pro vs K4 HE: your questions
The core difference is the switch technology and build. The B4 Pro uses standard mechanical switches in a low-profile, lightweight ABS body. The K4 HE uses advanced magnetic switches with adjustable actuation in a premium aluminum construction, offering far greater customization for gaming and typing.
The Keychron K4 HE is better for competitive gaming. It offers features like Rapid Trigger, adjustable actuation points down to 0.1mm sensitivity, and Last Key Priority (LKP) which are designed for fast-paced gameplay. The manufacturer also cites third-party tests showing it has industry-leading latency performance.
No, the Keychron B4 Pro is not listed as hot-swappable in its specifications. Its switches are soldered to the PCB, making switch replacement difficult without soldering skills. The K4 HE, in contrast, is hot-swappable for compatible magnetic switches.
According to their vendor descriptions, the Keychron B4 Pro claims a battery life of up to 300 hours. The Keychron K4 HE offers up to 110 hours of wireless use from its 4000mAh battery. The B4 Pro's lower-power components likely contribute to its longer claimed runtime.
Yes, both the Keychron B4 Pro and K4 HE list Mac and Windows support. They include keycaps for both operating systems and have a system toggle switch. The K4 HE's Launcher software also allows saving separate layouts for each OS.
The Keychron B4 Pro uses ABS keycaps. The Keychron K4 HE uses double-shot PBT keycaps, which are generally more durable and resistant to oil and shine over time compared to ABS.
No. The manufacturer states the K4 HE is compatible exclusively with Gateron Double-Rail Magnetic Switches. It does not support other magnetic switches like the Gateron Magnetic Jade or KS-20 series.
The Keychron B4 Pro is significantly more portable. It weighs 495g compared to the K4 HE's 1090g, and its ultra-slim low-profile design is only 9.6mm thick. The B4 Pro's lighter weight and slimmer body make it much easier to pack.
Yes, but through a specific method. The B4 Pro can be programmed using the Keychron Launcher web app for key remapping and macros. It does not support the open-source QMK or VIA firmware that the K4 HE offers for deeper customization.
The Keychron K4 HE includes multiple foam layers: 3.5mm thick EVA acoustic foam, EPDM foam, a silicone pad, and a bottom case PET film for a quieter, thocky sound. The B4 Pro's description does not mention internal sound-dampening foams, focusing instead on its external silicone key skin.
The Keychron B4 Pro has a fixed 3-degree typing angle due to its low-profile design. The Keychron K4 HE offers adjustable typing angles of 5, 8, and 11 degrees using its flip-out feet, providing more ergonomic flexibility.
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