Item Type: Wireless Left Hand Mouse_x000D_ Product Parameters:_x000D_ Type: Optical mouse_x000D_ Connection with Computer: Wireless_x000D_ Optical Resolution: 1600dpi_x000D_ Transmitting Power: +5db maximum_x000D_ Number of Keys: 6 keys_x000D_ Wireless Transmission Frequency: 2.4Ghz_x000D_ Adjustable Resolution: 3 gears and below_x000D_ Battery Specification: 500mAh_x000D_ How to Use:_x000D_ 1. Turn on the mouse switch_x000D_ 2. Insert the wireless usb head into the computer interface_x000D_ 3. Mouse can be used1Specially designed for left?handed users, the mouse can reduce muscle strain and even eliminate the damage caused by using traditional computer mice for many years. 23 levels of DPI (800/1200/1600) meet general and gaming needs. Equipped with advanced optical engine, the product can provide faster response speed, smoother tracking and more accurate movement. 3With an independent on/off button at the bottom, the mouse can effectively save energy. 4The size of the vertical mouse will fit perfectly in the palm of your hand. And it's easy to use. 52.4GHz wireless technology can provide a reliable connection without any interference within a 360?degree range within 10 meters. Enjoy fast data transmission with the convenience of wireless technology. 6Widely compatible with for Windows 2000/ Windows XP/ Windows 7/ Windows Vista/ Windows 98/ Linux/ Windows ME/ Windows 8/ Windows 10, etc. 1 x Mouse 1 x User Manual 1 x USB Head 1 x Charging Cable