Simple Safe 1 is the smart application program where smart device can play video data of NVR on Wi-Fi, 3G or 4G.This App consists of 3 Part, Live, Playback and Set.LiveLive tap is for play real-time video from NVR.You can play 4 Videos at the same time. Double touch enables the one video to be enlarged and if you want to see 4 sceen, just double touch once more.PlaybackPlayback tap is for play recorded video from NVRTo hide time below the screen, touch the screen and Oonce more touch enable time to be shown. +82-70-7118-6327)