Description Evo Labs BTM-001 Bluetooth Wireless Optical Mouse – Plug and Play – No Drivers Required (Bluetooth Connection Required) Pairing Instructions 1. Insert battery. 2. Turn mouse on using switch on the bottom. Press and hold the Left, Right and Middle Scroll buttons for 5 seconds. Mice will then appear on your Bluetooth device list. Model Number BTM-001 Design Home or Business Connection Bluetooth Wireless Sensor Optical Resolution 800 DPI Number of Buttons 4 (left, right, middle button with scroll & DPI change) Colour Matte Black System requirements Windows 7, 8, 8.1, 10 Bluetooth connection 1 AA battery (Not included) Condition of this unit: All our units are New Or used & may contain slight marks or scuffs on the casing, however this will not affect the function or use. Any major damage to the unit will be listed.