Sensor Technology: Optical Sensor Resolution: 1000-1200-1600 DPI Battery Life: Up to 3 Months Battery Type: 2*AA Buttons: 4 Wireless Distance: Max. 10 Meters Wireless System: 2.4GHz Connection Type: Wireless (USB RECEIVER) Size : 10cm x 3.5cm x 6.cm Lightweight and Portable - Easily carry it around for all of life's adventures! Long Lasting Battery Life - With up to 3 months of battery life, you won't have to worry about running out of power while working. Plug and Play Nono Receiver - Save space on your desk and laptop without hassle! Easily stores in the mouse while not in use. Smooth and Stable Tracking - With optical tracking technology, for better performance while working.