EASY TO RECHARGE, A GOOD CHOICE FOR DAILY USEECO-8150 built-in high quality rechargeable battery lets you recharge  whenever you need.BOOST WORK EFFICIENCYEnjoy the convenience of the dedicated Copilot AI key (for Windows 11 or above), which gives you quick access and makes your workflow smoother.OPTICAL PRECISION ENHANCEMENTS FOR BOTH LEFT AND RIGHT-HANDED USERSExperience superior optical precision designed for ambidextrous use, providing versatile and accurate control regardless of hand orientation.ENJOY THE FREEDOM OF WIRELESSUSB-A, with a range of up to 10 meters. Just plug and use; simple and convenient.Copilot Wireless Rechargeable Optical MouseWorking distance up to 10 metersCopilot button to activate Copilot assistant (for windows 11 or above)1200 dpi optical sensorPower saving switchPlug and play; USB-A receiver