Fujitsu FMV Mouse X adds a side scroll wheel
Fujitsu’s FMV Mouse X pairs a side scroll wheel and magnetic switches with an ergonomic design for Japanese hand sizes.
Fujitsu has unveiled the FMV Mouse X, an ergonomic Bluetooth mouse designed around Japanese hand sizes and long periods of everyday computer use. The X01MB combines a side scroll wheel with a conventional centre wheel, magnetic switches and programmable controls. 12
A mouse built around scrolling
The most obvious feature is the thumb-operated side wheel. Fujitsu positions it as a way to move horizontally through spreadsheets and wide documents without repeatedly shifting the hand or reaching for keyboard shortcuts. The main wheel handles conventional vertical scrolling, giving the mouse a dual-wheel layout that is unusual outside specialist productivity hardware. 1
The official FMV page also highlights an ergonomic shape and a weight of roughly 70 grams. Its design is intended to fit Japanese hand sizes, while the magnetic switches and magnetic wheel are presented as the core of the mouse’s durability and responsive-control pitch. Those are Fujitsu’s product claims, not independent test results. 1
The FMV Mouse X supports Bluetooth 6.1, a dedicated USB receiver and wired USB connections. It can pair with up to four devices, and Fujitsu lists support for Windows 11, macOS 13 or later, iOS and iPadOS 17 or later, Android 13 or later and ChromeOS. A Windows-only FMV application handles button assignments, connection management and presets. 1
The product is listed for Japan at an MSRP of 14,850 yen, roughly $95 before any local taxes, shipping or import costs. Fujitsu’s official store link is also Japan-focused, so there is no confirmed international launch price in the material reviewed here. 2
Our opinion
The FMV Mouse X is interesting because it treats horizontal scrolling as a first-class hardware problem rather than hiding it behind a modifier key. That could make it genuinely useful for spreadsheet-heavy work, particularly if the side wheel is as naturally placed as Fujitsu suggests. The caveat is familiar: comfort claims and magnetic-switch longevity need hands-on testing. For now, this is a clever Japan launch with a clear productivity angle, not a proven challenger to every ergonomic mouse on the market.