Features: 1.It adopts a new independent research and development algorithm to process the chip A80. 2.The A80 algorithm chip can effectively identify 7 different points at the same time. 3.The change brought by it can better improve the anti-interference of the keyboard and make the sensitivity and accuracy of the keyboard input. 4.There is a clear improvement over the previous generation. At the same time, the mouse mode also supports the enlargement and reduction of the picture in the WIN7 system and the recognition of the page turning gesture. Specification: Connect with computer:Bluetooth-Compatible Interface:Bluetooth-Compatible Operating distance:10 (m) Photoelectric resolution:3000dpi Product size:90mm*44mm*48mm includes: 1 x Host 1 x Instruction manual 1 x USB charging cable