Redragon M650 2.4GHz Wireless Gaming Mouse (1000/1500/2000 DPI), Nano USB Receiver, Avago Energy Efficient Infrared Engine 2000 DPI (3 speed gear 1000/1500/2000), Avago sensor 6 function buttons, ergonomic design, and nano USB receiver Durable smooth TEFLON feet pads and contoured body for ultimate gaming control. Smart power saving mode: any button will resume from intelligent sleep, excellent ability to run on most surfaces, comfortable, long lasting, buttons Supports Windows 10, 8, 7, Vista, XP or later operating system. Package contents: 2.4GHz Wireless gaming mouse and user manual