Detailed Product Description 2.4GHz optical mouse, 2.4g wireless mouse1.operating frequency 2.4GHZ,enjoy your freely wireless space,the distance is 10M2. Comfortable rolling wheel 3.Automatically save power sleeping functions. battery life be prolonged4.The USB receiver can hide on the body5. Working on any surface except glass6. Compatible with Win95, 98, 2000, ME, XP, NT, VISTA ect