IMPROVABLE NON-PROCESSING 2.4 GTZ You can pair as many as 3 computers and smoothly switch between them with one push of the button placed comfortably under your thumb. The three highlighted numbers always indicate the computer to which the connection was made. 12 MONTH BATERIA FOOD Work for up to one year before you need to replace your battery. To increase battery life, use the power switch when the mouse is not used. Battery life may vary slightly depending on the nature of the work on the computer and the way the mouse is used. ‘PLUG AND PLAY’ TYPE CONNECTION M171 Wireless Mouse is a real "plug and play" device. To start work, simply connect the receiver to the USB port of the computer. You do not need to pair mice or download software to use mice. FACILITY AND MOBILITY The shape of the mouse provides hand support during many hours of convenient use. The shape of both hands and the possibility of changing the right and left buttons make M171 mouse fit perfectly to the right or left hand.