Smooth & Stable Optical Tracking - Advanced optical tracking technology with fast click and responsiveness, 1200 default DPI increases work efficiency by 50% while using safari, word, excel, adobe or other program; Classic 3 buttons help you to get rid of the useless buttons. Mini Small Size Design - Ergonomically mini small size design and soft rubber grips conform to your right or left hand to be naturally comfortable; portable size design make it easy to store in bag for traveling Strong, Durable & Long Working Range - Passed 3,000,000 times keystroke test to guarantee extra durability?2.4GHz wireless technology ensure longer working range reaching up to 10 metres (33ft); Plug & Play - No need to install any driver, just plug the USB receiver into your laptop will the mouse start to serve. Long Battery Life & Extremely Low Power Consumption - 18 months long battery life, with auto power-off function, mouse will enter sleep mode in few minutes of inactivity. Press any button to wake it up. Note: powered by 1x AA batteries (not included). Wide Compatibility & Low Power Warning - Well compatible with Windows 7/8/10/XP, Vista 7/8 and Linux etc. Fits for desktop, laptop, PC, Macbook and other devices.