1) FPV model :it doesn't have "blue screen" problem when the signal gets weak 2) very wide power supply range(7-12V) 8 inch High Definition&FPV Aerial Photography LCD Monitor( CL8819 FPV ) - AV input Support : NTC M ; PAL M ; NTCSC BG ; PAL N ; NTSC DK ; PAL DK ; PAL I ;SECAM BG- FPV model :it doesn't have "blue screen" problem when the signal gets weak, This feature makes you able to fly much ...