Don't waste your money. Unless you are hunting in the wide open thisw item is virtually useless. In the woods, where it is most needed, you get false signals from trees, uneven terrain, brush piles, anything that will hold slightly more heat than the surroundings. Totally disappointed with this item. Save your money and buy a good book on tracking wounded game.
Cons: Too many false signals
This review was written in the old system and had content requirements that are different than reviews written today.