... H.264 High Profile Compression,Video Resolution:1280x1024,4 Channels D1 Real-time SD Card Mobile DVR with GPS MAIN FEATURES 1. High ... recording, up to mega-pixel for 4 channel(1280x1024) and D1 resolution for 1 channel(704x576).3. Compact size, much easier ... channel, 500Ω, RCAAUDIO LEVEL1V ~2V, p-pAUDIO COMPRESSIONG.711 STORAGESTORAGESD card, external USB device(memory stick or hard drive)FILE FORMATAVI ...