Product Description Color: Wireless Battery Mouse (Battery Not Included)1. Scientific ergonomic design encourages a healthy neutral "handshake" wrist and arm position for smoother movement and less overall stress. 2. 800 / 1200 / 1600 DPI resolution opticaltracking technology provides higher sensitivity than standard optical mice for smooth and precise tracking on various surfaces. 3. Add next/previous buttons for easy web browsing; the best choice for Internet surfers, gamers and those who work longhours in front of the computer. 4. Goes into power saving mode (completely cuts off power) after 8 minutes of inactivity, press the right or left button to wake it up. 5. Ease of use. Five buttons give you greater control over your computer system.Whether dragging and dropping, selecting large amounts of data, or casual gaming, this mouse provides a low-cost, effective solution for a variety of computing needs. Compatibility: Windows 10/8/7Power supply: usb chargingShipment Quantity: 1 piecePackage Contents: Only the above package content, other products are not included.Size: 123*65*82mm(Reminder: The size is measured by hand, please allow 1-2cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the product may be slightly different from the picture color.)