High Quality NEW!!! Dimensions: 4.21 x 2.76 x 1.69 in Weight: 2.89 oz Connectivity Technology: Wireless, USB 5 levels DPI: 800/1200/1600/2000/2400 Range: 10m/33ft Comfortable Ergonomic Design - Streamlined arc & finger rest to help reduce the stress caused by prolonged use. Side pits help reduce slippage. Easy to Use, Stable to Connect - Plug & play, driver not needed! Use mouse without any lag & dropout. Use it anytime & anywhere! Multi-function - Easily change the cursor sensitivity depending on your activity. Two side buttons that you can use to control page forward/backward for increased productivity. Power-saving & Long-lasting - Powered by 1 AA batteries (NOT INCLUDED), can last up to 15 months in daily-use condition. 8 mins of inactivity, mouse will automatically go into sleep mode. Press any button to wake it up. Wide Compatibility - Windows7/8/10/XP, Vista7/8, Linux, etc. Fits for desktop, laptop, PC, Macbook, tablet & other devices. Universal laptop USB mouse designed for office, family, travel, business meetings, etc.