In the past, years ago when I rode I had front and rear cameras
Do you have them
I ask because I am never sure where to put them
Handlebars ???
Is it ok on the helmet, due to the stress caused to the helmet by fitting one ? if you come off could it cause YOU more damage to the head if it is on the helmet
On the other hand it sees what you see, you could turn your head to catch a moron motorist or dog walker where as the bike mounted one will not see that.
Finally did you chose it/them on price, quality or visibility, I have GoPros but also High Vis Kodak PixproSP1, but whereas my GoPros take additional bolt on batteries for up to 24 hours, most most only have one battery for 1.5 hours meaning carrying and swapping batteries
Decisions decisions, how about front rear and helmet


