A:Answerhero 4 comes with rechargeable battery, waterproof case, usb cable and basic instruction manual in 10 different languages. micro chip sold separately +-25 dollar.
A:AnswerThe hero 4 might be a better choice for underwater use since it comes with a housing capable of 131' depths VS the Hero 5's 33' on it's own without housing. You have to ask yourself when you go in the water a various depths, do you feel lucky punk.... Is it worth the voice control and some other features the 5 has.... maybe, your call.