1. Stable wireless transmission2. 3 DPI  settings for variable-speed adjustment. 800-1200-1600DPI Handle emergencies  with ease.3. Small and exquisite appearance, easy to carry4. Easy to  install, plug and play.5. MINI receiver can be hidden inside the mouse, very  convenient and portable. Wireless: 2.4GHzDistance: 10mSize:  110 x 60.6 x 35mmButtons: 4Resolution:  800-1200-1600 DpiSwitch lif: 3.000.000 clicksBattery: 1 x  AA