RAPOO M50 PLUS BLACK Wireless Optical Mouse -4-speed preset DPI -Wireless 2.4G transmission -DPI adjustable up to 3200DPI, 6 buttons Ergonomic mouse with large hands and prone grip; 4-speed preset DPI can be adjusted with one click; Anti-slip finger support side skirt with front and rear buttons for easy use and convenience; Wireless 2.4G transmission with a coverage range of 10 meters; Soft tone button design reduces usage noise; One AA battery has a battery life of 12 months. Product Size121*76*43mm Product Weight 67g Transmission Method 2.4G Working Mode Optical Engine Ergonomics Right-handed KeyLeft/Middle/Right/DPI Switch/Forward/Back Roller Direction Bidirectional Resolution 3200DPI