The battery will record for about 90min, give or take, so you might want 2 or more batteries depending on usage. A 32GB card will record about 2 hrs if I remember correctly.
Good to know, you've just inspired me to purchase additional memory cards. Thanks for the info.
I use a Sony Action Cam. It is splash proof, so rain is okay. I have a case to use it under water, took it on a white water trip. On the bike, I mount it to my helmet. But I also have all kinds of other attachments. Can use most of the GoPro stuff.
I have a GoPro but don't buy one of you are planning to use it like a dash cam the batteries are brutal in go pros I almost never use mine because I can not be bothered to charge 3 batteries for a 3 hour trip and stop every hour to change them. But if you just want some cool footage to make a vlog that no one will watch I'd use either the GoPro or Sena action cam