1The left and right buttons adopt a silent micro-motion design, 250Hz high-return chip, and data transmission is faster. 2Adopt 2.4G wireless frequency hopping technology, super antiinterference ability. 3Ergonomic shape design, comfortable grip, intelligent adjustment of up to 1600DPI, rapid cursor positioning. 4Innovative red light technology, energy saving and power saving, built-in memory with smart connection. 5The receiver is plug and play, convenient to use and with good performance. Item Type: Wireless Mouse Type: Optical mouse Connection with Computer: Wireless Optical Resolution: 1600dpi Number of Keys: 6 (keys) Interface: USB Wireless Transmission Frequency: 2.4GHz Resolution: Adjustable 3 speed and below Operating Distance: Approx. 8meter / 26.2ft Working Method: Photoelectric Wheel Direction: Four-way wheel Battery Specification: 2 x AAA batteries Packing List: 1 x Mouse 1 x USB Receiver 1 x Mouse 1 x USB Receiver