Product parameters: Size: 120*75*78mm Color: black Optical resolution: 1600dpi (dpi) Adjustable resolution: three and below Connection with computer: 6 (key) Wireless transmission frequency: 2.4GHz Number of keys: 6 keys Interface: USB Operating distance: 15 (m) Cable length: 70cm Ergonomic design, vertical operation, naturally curved wrist, perfect fit for the palm of your hand, making it easier for you to work and learn. Comfortable touch, non-slip, non-slip, exquisite and comfortable surface, providing you with a better experience. Comfortable and fast forward and back buttons, you can switch the web page with one click, so you can easily access the Internet and quickly search for files. Precise positioning, easy to deal with office, games, design and other needs. Equipped with colorful LED indicator lights. Intelligent connection, no coding required, plug and play.