Shape

Though the dimensions don't match exactly, the shape of the M3 Gen II is virtually unchanged over the M3. Compared to the classic right-handed ergonomic silhouette embodied by the Zowie EC2, the left side of the M3 Gen II isn't raised as much, resulting in a flatter profile and less tapered hump. In addition, the hump is shifted slightly more towards the back, which has the M3 Gen II feel a fair bit different compared to the EC2. Much like on the EC2, the main buttons do not have comfort grooves so as to not restrict finger placement.


As for grip styles, I'd say the M3 Gen II is suitable for all three main grip styles—palm, claw, and fingertip grip. It is a medium-sized mouse with a moderately pronounced hump, which should make it a good fit for most hand sizes. For reference, my hands are 19 cm long and 10 cm wide, and I found the M3 Gen II very comfortable in claw grip.

Dimensions

This table includes the dimensions of the M3 Gen II 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:


ASUS TUF M3 Gen II


Razer DeathAdder V2 Mini


MSI Clutch GM31 Lightweight