got on Amazon, bought a few. We have decided not to venture to such remote places as to need one. Directions say NOT to use it if the bear has already seen you. Only if you see on off in the distance.
https://www.amazon.com/Frontiersman-Horn-Locking-Feature-Compact/dp/B09DZTKQXK/ref=sr_1_5?keywords=bear+horn&qid=1707831836&sr=8-5