I want to record my hikes just so if I'm killed there will be some record as to why (or who).

So a camera that can:
1. be placed on the chest or shoulder
2. easily switch out memory cards
3. lens scratch resistant from brushing against branches
4. tolerate mist
5. No 360 fish eye lensing
6. Battery atleasts 5hours ... changeable batteries?

Also if I run across something and have some recording of it for later.