Introduction
Keychron has built a reputation for producing mechanical keyboards that blend affordability, functionality, and style. But with the K2 HE Concrete Edition, they have taken a rather unconventional approach—using concrete as the case material.
What sounds like a quirky gimmick turns out to be a surprisingly refined typing experience, as I discovered over several weeks of daily use.
Design and Build Quality
The most striking aspect of the K2 HE Concrete Edition is, of course, its case. Rather than the usual plastic or aluminum, Keychron has molded the keyboard’s chassis from a concrete composite. This gives it a unique, almost architectural look. The surface has a matte, slightly porous texture that feels cool to the touch. The concrete is heavy—the keyboard weighs in at around 2.5 kg (5.5 lbs), which is significantly more than the standard plastic version. This heft contributes to a sense of permanence and stability; there is zero flex or wobble during typing.
However, the material choice comes with trade-offs. Concrete is brittle, and if you drop the keyboard, it might crack rather than dent. The edges are sharp and unfinished-looking, which may not appeal to everyone. But for those who appreciate industrial design, the K2 HE Concrete Edition is a conversation starter.
Typing Experience
Keychron offers this model with hot-swappable Gateron Jupiter switches (available in Red, Brown, or
Blue). I tested the Brown switches, which provide a tactile bump without a loud click. The typing feel is crisp and responsive, but the real surprise is the acoustics. The concrete case dampens vibrations and produces a deep, thocky sound—much more satisfying than the hollow ping of plastic keyboards. The heavy base also means the keyboard stays planted, making for stable and accurate keystrokes.
The keycaps are doubleshot PBT, which resist shine and fading. They have a slight texture that aids grip. The layout is the classic 75% with 84 keys, including a row of function keys and a volume knob. The knob is metal and provides satisfying tactile steps.
Connectivity and Features
The K2 HE Concrete Edition supports both wired USB-C and wireless Bluetooth 5.1 connectivity. It can pair with up to three devices and switch between them easily. Battery life is rated at around 40 hours with RGB lighting on, which is decent given the power draw of the lighting. Charging is via USB-C.
One downside: the concrete case blocks wireless signals slightly, so Bluetooth range is reduced compared to plastic models. In my testing, the connection remained stable within 3 meters (10 feet), but dropped out occasionally beyond that. For most desk users, this won’t be an issue.
Conclusion
The Keychron K2 HE Concrete Edition is not for everyone—it’s heavy, expensive ($199), and somewhat impractical for travel. But as a desk centerpiece, it offers a typing experience that’s both unique and excellent. The concrete case is not just a gimmick; it genuinely improves acoustics and stability. If you value solidity and are willing to trade portability for personality, this keyboard is a rock-solid choice.
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