... CE,Rohs approval Product Description:1)2.4GHz digital wireless transmission, operation distance is up to 10 meters. ... , no recoding is needed after battery replacement. 3)4-section design, the service life of two AAA alkaline ... please check battery power and replace it as necessary. 4)The mouse will shut off automatically and enter sleeping ... recycle bin6)Product Size:95*65*36mm 2.4 Ghz wireless mouse