Discover the thrills of a new hobby with the affordably priced, full-featured Bounty Hunter Discovery 3300 Metal Detector. Four-tone audio feedback allows you to quickly differentiate targets. Adjust sensitivity with 11-segment digital target identification. Three-digit numeric target value assigns a value to different objects based on type of metal and size for quicker identification. Manual ground balance offsets the effects of minerals and slats in the ground for more accurate readings. Zap mode eliminates unwanted targets from detection with one touch. Use the pinpoint mode for accurate location and deepest detection. 8 waterproof concentric search coil. Coin-depth indicator with maximum depth to 8. Made in USA. Batteries:Two 9 volt (not included). Application:coin, relic, jewelry. Length:44 to 51. Search coils:8 waterproof open concentric. Frequency:6.6kHz. Wt:4.2 lbs. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Metal Detectors.