The Bounty Hunter Jr. metal detector identifies coin-sized objects up to 5" underground and senses large items up to 3" deep. This detector has an LCD screen, a sensitivity control and maximum depth detection to home-in on precious metals. Its discrimination control prevents it from detecting nails, cans or other unwanted metals. The junior metal detector has a battery tester to alert you when the battery is low. Its light weight and ergonomic design make handling easy. Adjustable length from 21" to 32". Runs on two 9-volt alkaline batteries. Waterproof coil included. Some simple assembly required.