Can anyone explain the purpose of the AV jack on the side of the A119S?
I'm guessing it is Audio and Video Output but wanted to know what it can output to?
Most tablets and cellphone don't have AV jack inputs.
Maybe an Input AV jack on a TV or another Video Camera?
Yes, you need a 3.5mm to AV break-out cable (red, yellow, white). This is used if you want to view the saved files on a TV or Monitor that has composite input. You could also use the cable to transfer the video to a video recorder with composite input. Pretty outdated as even most of the cheaper cameras have HDMI output now.