Feature:1. 3 DPI Adjustable: Mouse can easily adjust the sensitivity of the mouse, 800, 1200, 1600 DPI three gears, using a high quality optical engine, can achieve faster response, smoother tracking and higher accuracy movement.2. Rechargeable Mouse: The Rechargeable wireless mouse has a built in 110mAh lithium battery, which can easily charge the mouse via the included USB cable, no need to replace the battery. After a full charge of 3 hours, the wireless mouse can be used for about 30 days.3. Professional Design: The vertical mouse allows you to keep your left hand in a normal holding position, avoiding wrist pain caused by prolonged use. Perfect for offices and home offices, designed for left handed users.4. Wide Compatibility: Mouse works with PCs, Laptops and all devices with USB connection, no additional drivers required, plug and play.5. Durable Design: The Wireless mouse supports up to 50 million clicks, giving you a premium feel better than a normal mouse. It features an elegant rubber matte finish that provides good grip while preventing fingerprints and smudges.Specification:Item Type: Left Hand Vertical MouseMaterial:ABSBattery Type: Built in 110mAh 302323 Lithium Battery (Ship with Inbuilt Battery)Use Distance: >15MTransmit Power: +5db MaximumSensitivity: 800, 1200, 1600 DPI Adjustable in Three LevelsSystem Requirements: For Windows 2000, for XP, for Vista, for CE, for win 7, for win10, for Linux, for Android.Package List:1 x Mouse1 x Charging Cable1 x Adapter1 x User Manual