4-channel 960H/H.264 DVR 500GB hard drive Smartphone viewing, text messaging & email alerts 960H resolution x 4 @ 120ips DVR with 50GB hard drive & expandable up to 3TBHDMI(R), VGA & composite video outputsMobile device/smartphone/4G compatibleFree iPhone(R) & other device appsEmail & text alerts with photo image attachedGrid video motion detection PTZ controlTurret dome cameras are fully adjustable, weatherproof, contain 24 IR LEDs for night vision plus 800 line imagers with a mechanical IR cut filter Includes four 800TVL IR turret dome cameras, cables, warning decals, mouse & IR remote