... receiver design.* Energy-saving techonology. 2 pieces of AAA alkaline battery supply over 3 months working time.* Low-voltage alarming function ... USB interface of notebook & computer , and installing the battery into the wireless optical mouse ,reaction is completed within 1 ... not work .In general condition , 2 pieces of AAA alkaline battery can operate for more than 6 months. ·The ergonomics design ...