D3D 4 channel high definition DVR with IPhone and Android operating supported makes it a unique product in the range. OnVif and P2P technology of product supports device to transfer recorded video over 500 m via 75-3 coaxial cable without any image quality loss. You can experience a multiple recording mode with this D3D 4 channel DVR like auto recording, time frame recording, motion detection recording or any kind of action with alarm recording. Device is compatible for DHCP/DDNS/PPPOE/NTP … network services which powers it for 16 channel playback simultaneously. 6 TB HDD keeps you worry-free for storage space. You can back up your device using any USB or DVR-RW or through the network.