Feature: Use with virtually any Bluetooth enabled computer or tablet: Connects to MacOS, Windows, Chrome OS and Android Compact, portable design: Slips easily into your bag or pocket for use anytime, anywhere Navigation button and tilt wheel: For smarter control and easier navigation of your OS Comfortable curved shape with rubber grips: Keeps your hand feeling comfortable, even after long hours of use Laser-grade optical sensor: Smooth, precise control on just about any surface Long battery life: Go up to 10 months between battery changes battery life may vary based on user and computing conditions Rechargeable, dispensing charging line Specification: DPI:1000/1600/2400 Number of Buttons: 4 Buttons Connection Type:Bluetooth wireless Support Systerm:Support Window 7/8/10, Android 3.2, MacOS x10.8 Color: As the picture show Package List: 1 x Mouse 1 x Receiver 1 x USB Cable