2.4G Stable Wireless Transmission More secure and accurate, the transmission distance is up to 10 meters (about 30 feet). Virtually no delays or dropouts. No driver needed, just plug and play! Ultra Energy Saving & Durable Multi-level power saving mode, less power consumption. There is a button at the bottom of the mouse with three adjustable modes: ON, OFF, ON (with backlight). The mouse will go into automatic sleep mode after 8 minutes of inactivity. Also, it has 500,0000 times keystroke test and works well. Ergonomic Design & Customized LED Light Colors The LED light color is 7 levels adjustable with DPI change which can bring you enjoyment as a gamer. Also comfortable to touch, can be used for a long time without fatigue. Rechargeable Function Built-in 600Mah lithium battery, you can charge it with our USB charging cable. Compatible with various operating systems including Windows and Mac. Lifetime warranty!