(UPGRADE FUNCTION) RECHARGEABLE AND POWER INDICATOR - Built-in 700mAh large capacity rechargeable polymer lithium battery, can be used for several months after one charge. This wireless mouse is equipped with three power indicator lights, and the innovative design can clearly display the power source, saying goodbye to power failure. 2.4GHz wireless connection: Support a stable connection and precise tracking with a working distance of up to 10 meters. Plug and play. 3 DPI levels (1000, 1200, 1600) allow the mouse speed to be changed freely. 6 effective buttons: Including left-right buttons, DPI button, scroll wheel and two buttons side. Adding side buttons lets you flip through pages more easily when browsing the web. NOTE: Side buttons are not valid on Mac OS Ergonomic design and optimized for the right hand: Designed for right-handers, the contoured shape and soft rubber grips keep your hand comfortable for a long time without fatigue . And the sturdy button can withstand up to 3 million stress tests. Wide compatibility and worry-free guarantee: Well compatible with Windows 10/8/7/XP, Vista Linux and Mac OS.