Keychron K3 Pro vs K4 HELow-Profile vs Magnetic Switch Showdown
Choose the K3 Pro for a slim, portable build, or the K4 HE for advanced magnetic switch features and a full number pad.
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4.7 (54)4.7 · 54 reviews
from$67at Keychron
4.0 (11)4.0 · 11 reviews
from$118at MK
Which one should you get?
Get the
Keychron K3 Pro
Low-Profile
Build quality in the top 15% of 75% boards under $100.
- Ultra-slim low-profile design, noted as 31% slimmer than conventional switches.
- More portable due to its smaller 75% layout and lower 930g weight.
- Offers both low-profile ABS shine-through and PBT keycap options.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-CH. The other board is sold in those layouts.
- No numpad.
Get the
Keychron K4 HE
Magnetic Switch Showdown
Build quality in the top 10% of 96% boards under $150.
- Features Gateron double-rail magnetic switches with adjustable actuation (0.2-3.8mm).
- Includes gaming features like Rapid Trigger, Analog Mode, and Last Key Priority.
- Large 4000mAh battery promises extended wireless use.
- Magnetic switches only. Standard MX switches will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Your primary need dictates the choice. If you want the thinnest possible wireless mechanical keyboard for easy transport and a minimalist desk, the Keychron K3 Pro is the clear option. If you desire the latest switch technology with deep customization for actuation, need a number pad, and prioritize advanced features for gaming or a thocky typing sound, the Keychron K4 HE justifies its larger size and higher cost.
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 K3 Pro
Keychron K4 HE
Layout size
75%
96%
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, Wired
Bluetooth, Wired, 2.4 GHz
Wireless for several devices and wired for lower latency
Battery
1,550 mAh
4,000 mAh
A larger battery means fewer cables during the day
- Keychron K3 Pro
- Keychron K4 HE
- Performance
- 8192
- Build quality
- 8187
- Productivity
- 7994
- Customizability
- 8889
- Portability
- 7756
- Hot-swappable
- Max polling rate: 1,000 Hz
- QMK
- VIA
What will you mostly use it for?
The K4 HE is the stronger choice for office work, gaming, and content creation, largely due to its integrated number pad, massive battery, and advanced magnetic switch features. The K3 Pro is the clear winner for travel thanks to its slim, lightweight 75% form factor. For programming and modding, the keyboards tie, as both offer excellent QMK/VIA support and hot-swap capabilities, leaving the choice to layout preference.
Pick the Keychron K4 HE
- The K4 HE features adjustable actuation points from 0.2 to 3.8 mm and Rapid Trigger functionality.
- It includes gaming-focused features like Last Key Priority (LKP) and Snap Click.
- Its 1000 Hz polling rate on both wired and 2.4 GHz wireless matches the K3 Pro's performance.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Pro
54 owner reviews
“For anyone buying this, remember to toggle the switch to the correct operating system. Other than that, the feel is good and it comes with a good feature set for a low price”
“I was happy at the beginning but after few months of use I'm getting more and more frustrated. Keyboard just hangs sometimes and I'm not able to connect with BT. I use it to operate two laptops and using Fn+1 anf Fn+2 combination is great... when it works…”
Keychron K4 HE
11 owner reviews
“So far it have met my expectations for the use i wanted it for, had a small hic up the first day i started ysing it but got easily resolved with the provided user manual”
“The keyboard is smooth to the touch, and has the nice feel. For me, it's almost an ideal keyboard but the one thing that gets me and it's a hard issue is that when connected, it takes away input from my controller when I game, especially for live service…”
Keychron K3 Pro vs K4 HE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
19 of 29 specs differ
Keychron K3 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
Media keys
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 K3 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
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.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Keychron K3 Pro vs K4 HE: your questions
The core difference is the switch technology and form factor. The K3 Pro uses low-profile mechanical switches in a slim 75% layout. The K4 HE uses advanced magnetic switches with customizable actuation in a 96% layout that includes a number pad.
No. According to the manufacturer, the K4 HE is compatible exclusively with Gateron double-rail magnetic switches. It does not support standard mechanical or other magnetic switch types like the Gateron Magnetic Jade.
The K4 HE is likely better for a quiet office. Its listing includes multiple sound-dampening layers like 3.5mm EVA acoustic foam, EPDM foam, and a silicone pad, which are designed to produce a softer, thocky sound. The K3 Pro's vendor description does not highlight similar internal dampening.
No. The Keychron K3 Pro has a 75% layout, which omits the number pad, function row, and navigation cluster to save space. The K4 HE uses a 96% layout that compactly includes a number pad.
Yes. Both the Keychron K3 Pro and K4 HE support open-source QMK firmware and the VIA/Keychron Launcher web app. This allows for extensive key remapping, macro creation, and lighting customization on both models.
The Keychron K4 HE has a much larger 4000mAh battery compared to the K3 Pro's 1550mAh battery. While actual runtime depends on usage, the K4 HE's larger capacity will provide significantly longer wireless operation between charges.
It depends on the version. The K3 Pro offers both shine-through ABS and non-shine-through PBT keycap options. The K4 HE Standard Version has shine-through Cherry profile PBT keycaps, while its Special Edition has non-shine-through OSA profile PBT keycaps.
Rapid Trigger is a magnetic switch feature on the K4 HE that allows a key to be reactivated based on travel distance rather than a fixed actuation point. This enables faster keystroke repetition, which is advantageous in competitive gaming.
The K3 Pro is capable for gaming with its 1000 Hz polling rate in wired mode. However, it lacks the specialized magnetic switch features of the K4 HE, such as adjustable actuation, Rapid Trigger, and Analog Mode, which are designed for high-performance gaming.
Yes. Both the Keychron K3 Pro and K4 HE are fully compatible with macOS and Windows systems. They include keycaps for both operating systems and have a physical switch to toggle between them.
On the K4 HE's magnetic switches, you can software-adjust how far down a key must be pressed to register a keystroke. This can be set anywhere from 0.2 mm to 3.8 mm in 0.1 mm increments, allowing you to customize typing feel and speed.
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