Wide Compatibility -- Compatible with Windows 7/8/10, XP, Vista and Linux etc. (NOT FOR MAC OS). Intelligent Sleep and Wake Up -- The sleeping function is for saving energy, it goes to sleep when you are not using it for 8 minutes, and you only need to click any button on the mouse once, it should be back to work. High-capacity Rechargeable Battery -- Built-in rechargeable batter, no longer need to buy batteries. Easy to Use -- Plug and Play mouse with USB receiver, easy to start to use, no additional drivers or software needed. Six buttons give you improved control over your computer's systems. Ergonomic Vertical Design -- Specifical for left-handers, the ergonomically-designed thumb rests and grips fit the contour of your palm for maximum comfort, perfect for small hands.