Mice & Trackballs Description:Rechargeable wirele type. Built-in rechargeable lithium-ion battery,very convenient to use, dispense with frequent battery replacement trouble, comes with a recharging usb cable.System requirement: Windows 2000/XP/Vista/7, Linux, M-a-c OS,above.Fashionable Pink Girl design: Slim design for sleek look and easy to useErgonomically designed, optical tracking technology, working on many different surfaces and ideal usage for home, office or game.Suitable for PC Laptop Desktop Computer With USB port.Specifications:Material: PlasticColor: PinkSize: approx.: 125x67x39mmDPI: 1600 dpi.Power supply: Rechargeable lithium batteryNote: No retail package. Transition: 1cm=10mm=0.39inchPlease allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package includes:1 x 2.4G Wirele Mouse1 x USB receiver(color random)1 x USB cable