Feature:1. The mouse is specially ergonomic designed for right‑handed users to reduce muscle strain. Wrist pain, shoulder fatigue, carpal tunnel syndrome and tendinitis can all be relieved2. Enjoy fast data transmission with the convenience of wireless technology. 2.4GHz wireless technology provide stable and reliable connection without any interference within a 360‑degree range within 10 meters3. Equipped with advanced optical engine to provide faster response speed, smoother tracking and higher accuracy movement. 3 level DPI (800/1200/1600) meets general and gaming needs4. Come with intelligent power saving, the independent on/off button at the bottom can effectively save energy5. Easy to use, solid and reliable 2.4GHz wireless connection, just plug and play. Vertical mouse size will fit perfectly in the palm of your hand. You can carry without restrictions6. The product is compatible with for Windows 2000, for Windows XP, for Windows 7, for Windows Vista, for Windows 98, for OS X, for Windows ME, for Windows 8, for Windows 10, etc.Specification:Item Type: Optical Vertical MouseConnection with Computer: WirelessOptical Resolution: 1600DPITransmitting Power: +5db maximumNumber of Keys: 6 KeysWireless Transmission Frequency: 2.4GhzAdjustable Resolution: Three levels and belowPolymer Lithium Battery: 500mAhHow to Use: 1. Turn on the mouse power switch2. Insert the wireless USB head into the USB interface3. Mouse can be used.Package List:1 x Mouse1 x Charging Cable1 x USB Head1 x User Manual