Treasure Cove TC-1010 Fortune Finder Junior Metal Detector Designed for older kids, young adults & recreational users One-Touch auto-tuning for easy use Easy-to-read view meter that is easy to understand; Two-color LED ferrous and non-ferrous indicators; Audio feedback with volume control 7.5-inch waterproof search coil detects a US quarter buried up to 6-inches Low battery indicator; 6.3mm headphone jack; Operates on one 9-volt battery (not included)