... 2.4g optical wireless mouse 1,Ergonomics arc mouse design,avoid hand fatigue.Suitable for both right/left handed use.2,Comfortable rolling wheel3 ... on any surface except glass and mirror5,Power off when mouse is folded, save power and prolong battery life6,Low ... Me/2000/XP/Vista/7/MacSpecification 2.4g optical wireless mouse wireless folding mouseSize:115*59*38mmButtons Number:3Interface:USBFrequency: ...