Sensor Technology: Sensor Optical 1000-1200-1600 DPI resolution Battery Life: Three Months or More Type of Battery: 2*AA Four wireless buttons Maximum distance: 10 meters 2.4GHz wireless system Wireless connection type (USB receiver) Dimensions: 10 cm by 3.5 cm by 6 cm It is portable and lightweight, making it easy to take on all of life's adventures! Long Lasting Battery Life: You won't have to be concerned about running out of power while working because the battery lasts up to three months. Plug and Play Nono Receiver—a hassle-free way to free up desk and laptop space! When not in use, it fits neatly inside the mouse. Smooth and Stable Tracking: Improved working performance through optical tracking technology.