... ,nice packing 3.Logo printing service 4.OEM,ODM service 5.CE,ROHS stand 1. Optical mouse ,mouse ,computer mouse,gift ... at the same time. Data delivery steadily,no signal delay. 5. Plug &play 6. Low battery alert function:red light prompts ... Requirements: Windows® 95/98/2000/ME/XP/NT/Vista/7, Mac® OS X 10+, Linux ReliabilityNo additional software driver needed.Button Switch activation ...