6 DPI Level Wireless Mouse: 4800/3200/2400/1600/1200/800 DPI, Plug & Play - no need to install a driver. Tiny USB Nano style receiver plugs into your PC and can stay there. (Please note: The Blue USB receiver is in the battery compartment) 2.4G Wireless Mouse: A more secure and precise experience than the traditional FM radio system with an increased working distance of up to 15m Comfortable Ergonomic Design: The streamlined curved design makes the mouse more ergonomic, which greatly reduces wrist pressure. Symmetrical design for left/right hand use Up to 30-month Battery Life: The long battery life virtually eliminates the hassle of changing batteries. Smart auto-sleep mode saves power. (Battery life may vary based on user and computing conditions). Features a battery level indicator (Batteries are NOT included) Universal Compatibility: Compatible with Windows 7/8/10/XP, Vista 7/8 and Linux etc. Suitable for desktop, laptop, PC, MacBook, Chromebook and other devices. (Please note: The side buttons DO NOT work for Mac OS devices due to compatibility issues. Other Buttons function normally)