... +ADPCM External connecter,USB,SD Card, power interface Power supply,3.6V-5V,100MA Power consumption, Data Transmit < 5mA, Data memory < 83mA ... video record: 2G SD Memory ,2 days monitor video record 3.detection function for moving object: Automatic opening video record when ... when power failure, Stable screen picture, No lost data 10Carry Lithium batteries, connect with external power supply .