YUNZII B75 PRO review

The YUNZII B75 PRO is a 75% wireless keyboard with a multi-function knob. The ISO version has 83 keys. An ANSI variant with 82 keys is also made. It connects over Bluetooth, 2.4GHz wireless or wired USB Type-C, and every key is hot-swappable. That mix points to a compact desk board for daily typing that you can change later.

Owners praise the typing sound and feel. The specifications fit that praise. The board uses a gasket mount with five-layer padding, pre-lubed switches and precision-tuned stabilisers. The keycaps are double-shot PBT in Cherry profile. Together, those details point to a board built around the typing experience.

The switch depends on the variant. YUNZII lists Milk Linear, Cocoa Cream V2 Linear and Blue Grey Tactile. Two of the three are linear and one is tactile. If you want a tactile feel, check you're buying the right variant before you order.

The ISO variant weighs 937g. The gasket mount and five-layer padding are the main build details YUNZII gives, along with the double-shot PBT keycaps. YUNZII doesn't list the case material, so check the product page if that matters to you.

Full-key hot-swap is the strongest customisation feature here. The sockets take 3-pin or 5-pin switches, so you aren't tied to the switches the board ships with. Because the stock switches vary by variant, the sockets also let you change them later.

Firmware is more limited. Key remapping, macros and RGB control all go through YUNZII's own software. QMK and VIA support isn't listed. YUNZII says the software runs on Windows and macOS, but the Vivid Repairs review describes it as Windows-only. If you rely on remapping, confirm software support for your operating system before buying. If you want QMK or VIA, look elsewhere.

The board offers three connection modes: Bluetooth, 2.4GHz wireless and wired Type-C. The knob handles volume, RGB control and mode switching, so a single control covers several everyday functions.

The battery is 4000mAh, and owners praise the battery life. That is a point in the board's favour for anyone who plans to use it wirelessly.

A 75% layout with a knob keeps the footprint small while holding 83 keys on the ISO version. The ANSI variant has 82 keys, so the ISO option is the one to pick if you want that layout. No typing-angle adjustment is described, so check the product page if resting angle matters to you.

The B75 PRO makes sense if typing sound is your priority. The gasket mount, pre-lubed switches, tuned stabilisers and owner praise all point the same way. Hot-swap sockets and three connection modes add flexibility. The main trade-off is firmware. You get a vendor app rather than QMK or VIA, and its platform support is described differently by the manufacturer and one reviewer. If you can live with that, the rest of the specification suits a compact wireless desk setup.