Specification:Button Numbers4ColorGrey, Ash BlueConnection TypeWirelessDimension(LxWxH)113 x 57 x 26 mmOptical Sensor Resolution1200/1600/2000 DPIReceiverNano USB ReceiverReport rate125HzSensorOpticalShapeSymmetricSystem RequirementsWindows XP / Vista / 7 / 8 / 8.1 / 10Weight62 g ( Batteries not included )Warranty1 Year Brand Warranty
