Feature:1. Sunplus SPCP190 professional game chips,with high-performance program control decoder chip,to achieve smooth movement and precise control.2. Light mode: RGB marquee effect, Up to6 lighting pattern designsThe light can be turned off.3.A866 Sensor can be set DPI resolution up to 6400DPI(1000/1600/3200/6400).4.Large and comfortable Mouse Wheel design.5.The A866 uses Sunplus SPCP190 advanced navigationdetection technology for maximum motion detection upto 32 inches per second (ips) with accelerations up to 12G.6. SPECIAL COMBINATION KEYS:Middle key + DPI+/- : Turn on / turn off the lightLeft button + DPI+/- : Switch light mode7The parameters and lighting colors are as follows:Four-speed DPIFirst gear : 1000dpiGreen lightSecond gear : 1600dpiPurple lightThird gear : 3200dpiBlue lightFour gear : 6400dpiRed lightPacking list:1 x gaming mouse1 x User manual