No clue at one point I would have but that has been forever ago. I want to say the battery life was like 2 hours 3 hours but I don't remember at all and if you put her big enough card in it you can record as long as the battery is alive.
The instructions are terrible...can´t even see the diagram. I had the key cut so that it looks like a real key and no one notices it is fake. easy solution to the key issue...just take it to where they make keys and have them cut it like any key.
Take the memory card out plug it into a memory card reader plug it into the computer and open the files. I don't understand the question just view it how you would any other memory card
Sadly I have no recollection of how large the files were on this. Sadly that was a very long time ago and I do not have that camera anymore since I moved, well I probably still have it I just don't know where it is
There's no mobile phone app there's no connecting it to your phone. It's quite literally just push the buttons to start recording and that's it then you take the SD card out and read it on a computer or phone or tablet