I recently bought the Olympus WS-802. It's lightweight. I carry it with the recording turned on all the time. It has a button to lock it so that it doesn't get accidentally switched off. I can stick it in the outside pocket of my bag and it still picks up all audio very clearly.
NRA Certified Instructor & Range Safety Officer
Teaching classes in Lorton VA & Springfield VA
PM me if you need a class, RSO or safety briefing