Hello, I was looking for a full hd camcorder with 5.1 audio, it reduces the selection. in addition the latter is wifi, it can transmit live via a smartphone or a box. it has video surveillance function (controlled from a smartphone). with 5.1 audio, it's like the movies with a home cinema amplifier. the drawbacks that I found: it is too light in weight and mounting requires a PC with an i7 processor category for the best result.