Shape

The shape of the Clutch GM31 Lightweight Wireless is somewhat unusual. Relative to its length, the GM31 is narrower than average, and the hump is tapered considerably, which further emphasizes its already skinny profile. That said, the skinniness is somewhat alleviated by the right-handed ergonomic design. Its basic geometry resembles that of the Cooler Master MM730/731, with the rear flaring out more towards the left, resulting in the left side strongly curving inwards around the middle, whereas the front doesn't flare out as much. The hump curvature is somewhat reminiscent of Razer's DeathAdder, although without the width to match. The main buttons feature moderately deep comfort grooves. Overall, a fairly original yet agreeable design, albeit not for wider hands.


As for grip styles, I'd say the Clutch GM31 Lightweight Wireless is mostly suited for palm and claw grip. It is a medium to small mouse with a moderately pronounced hump, which makes it suit medium to small hands. For reference, my hands are 19 cm long and 10 cm wide, and I found the Clutch GM31 Lightweight Wireless very comfortable in claw grip.

Dimensions

This table includes the dimensions of the MSI Clutch GM31 Lightweight Wireless and several other right-handed ergonomic mice. "Front height" denotes the distance between the base and main buttons. Measurements with two decimals have been taken with a caliper, while those with one decimal have been taken with a ruler. For a full list of all measurements taken, please refer to this sheet compiled by an esteemed community member.


Below are some comparison shots with each of the measured mice:


Cooler Master MM731


Fantech Helios Go XD5


Pulsar Xlite V2 Mini Wireless


Xtrfy M4 Wireless