1.8 CH 7 inch TFT DVR Kit 2.8 PCS 20 meter Waterproof IR Camera 3 ... AccessBlackberry, google AndroidV2, symbian, Windows Mobile, iPhoneUSB2.0USB mouse, USB disk (backup, upgrade)Playback ModeNormal play, fast forward, fast ... rewind, frame by frameBackupBackup Record file via USB flash disk, USB disk, USB CD/DVD-RW & NetworkPTZ ControlBuilt-in RS485, support ... ±1V/150mA 8 CH 7 inch TFT DVR Kit