... min pen dvr, pen camera, usb pen dvr, built-in 2GB or 4GB, real time display, audio, Built-in Li-Battery, ... Li-BatteryImage resolution: 352*288 pixelsBuilt-in microphone for audio monitoringColor: Silver, Black Technical Specification Get the mission completed ... · Battery Type: built-in Lithium-ion· Battery Support time: about 2 hours · Adaptor Type: USB adaptor charging cable· Operating temperature: ...