Compact for portability you39ll appreciate how the bluetooth mobile mouse 3600 comfortably fits your hand and your mobile lifestyle use it just about anywhere even on a rough park bench or your living room carpet relying on microsoft bluetrack technology1 no transceivers or wires to manage keep using your mouse for up to six months with a single battery input device buttons type pressed buttons bluetooth version 41 le purpose travel recommended usage universal scroll yes scroll type wheel num