... display.3.IP network communication ,no limit of area 4.2.4 G wirless cod remote control,omnidirectional,concealment and identification ... GPS backend server support.11DisplayBuilt-in 1.77 inch TFT color screen,support video preview,support video playback,photo playback support ... vibration.Record for short vibration,and take photo for flash vibration.21LithiumBuit-in 2700mAh lithium battery,can support 3 ...