RedHead Hearing Enhancer
RedHead Hearing Enhancer features 5 adjustable volume levels; includes extra ear pieces and batteries.
Not to be used as a noise suppression device.
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Again..."you get what you can pay for" !!
It works very well for me in my treestand and didn't cost me a bundle of money. So I would not be all that upset if I lost it in the woods. It's cheap enough to purchase another one.