The Cherry XTRFY M42 gaming mouse fits like a glove. It comes with two back shells, so you can pick the best one for your hand. They work with claw, palm and fingertip grips. Gamer's choice. It's also completely symmetrical to suit both righties and lefties. It barely tips the scales at 67 g, so it's perfect for rapid movements. And the lightning-fast 1 ms wireless connectivity won't let you down when it matters. Good to know - The Pixart 3370 sensor is incredibly precise and you can set the DPI between 400 and 16000 - You'll get up to 75 hours of playtime and you can carry on playing while you're charging - Fly your colours with the customisable RGB in the back shell and scroll wheel