Compact Design for ultimate portability4-way scroll wheel for navigating up, down, left and rightWorks on virtually any surface with BlueTrack TechnologyAmbidextrous design is suitable for use with either handWindows 10 / 8.1 / 8. Does not work with Windows 7Mac OS X v10.10.3 -10.10.4Android v.4.4.2 / 5.0Bluetooth 4.0 / 4.1 (Bluetooth Low Energy)You'll appreciate how the Bluetooth Mobile Mouse 3600 comfortably fits your hand and your mobile lifestyle. Use it just about anywhere, even on a rough park bench or your living room carpet, relying on Microsoft BlueTrack Technology. No transceivers or wires to manage. Keep using your mouse for up to twelve months with a single battery, and rely on the power indicator to tell you when it's time to replace.