Details For gamers, Fantech Rhasta II G13 Interface: USB Sensor, Optic Extra features The maximum resolution of the game optical sensor is 2400 DPI. A dedicated button for "on the fly" DPI mode changes Buttons: one scroll wheel and three buttons plus one button Composition: cycle buttons made of rubber and silicone 5 million keystrokes of durability. RGB lights on a tissue braid cable Legs with low friction Both left- and right-handed people can use it.