... 5.CE,FCC,RoHS Professional Factory 3D Optical Mouse This is a great mouse, it has a great grip ... function.Micro-receiver.Decent and modern design.High qualityIdeal laptop companion for home and office ... -2480MHzRF operation channel: 16, auto frequency hoppingUSB: USB 2.0Operation systems: Windows 2000, Me, XP, ... 2.Guarantees/warranties/terms and conditionsWe assure quality of your order same as the samples ...