... :15mA ,1.5V USB:ver.2.0 2.4g wireless optical mouse driverProduct features:1)2.4GHz digital wireless transmission,operation distance ... is up to 10m.2)Built-in mouse memory,no recoding is needed after battery replacement.3)5 ... is 2 AAA alkaline battery is up to six months.4)Intelligent connectivity,no need to code,plug and play.5 ...