2.4GHz & Rechargeable: Built-in rechargeable battery, with a charging cable. 2.4GHz wireless technology to ensure fast and stable transmission, reaching up to 33ft/10M. [Note: Please use computer's USB interface to charging the wireless mouse] Silent & Ergonomic Design: Special soundless design for the right and left buttons. The heightened mouse cover with matting finish fits your palm. And the symmetrical design allows it to fit both hands. LED Breathing Light: 4 Colorful LED breathing light change alternately (red, green, purple, blue), can not be set to one specific color. Soothing light lights up the mouse in dark, it can be turned off by the bottom light switch. 3 Adjustable DPI: 1200,1600,2400, press the DPI button to change the cursor sensitivity depending on your activity. High precision optical mouse for quick tracking and precise movement allows easy operation on cloth, paper and tabletop. Perfect Compatibility: Compatible with most system including Wi