Ideal for the intermediate relic hunter, the Teknetics Delta 4000 Metal Detector with 8" Open and 10" DD Coils has 9 sensitivity adjustments and 8 segments of discrimination for fine-tuned performance. 2 different search coils an 8" open and 10" DD ensure that you won't miss a thing. Its large, easy-to-read LCD screen and 3 detection modes All-Metal, Discrimination, and Pinpoint will have you zeroing in on buried metal like a pro. Depth readout lets you know how hard you'll have to dig. Preset ground balance. Low-battery indicator. Runs on one 9V battery (not included). Mfrs. 5-year limited warranty. Applications: coin, relic, treasure. Length: 41" to 51". Search Coils: 8" open and 10" DD. Frequency: 7.69kHz. Weight: 2.3 lbs. Made in USA.Manufacturer model #: DELTA-10DD. 8" open and 10" DD search coils 9 sensitivity adjustments 8 segments of discrimination 3 detection modes: All-Metal, Discrimination, and Pinpoint Depth readout lets you know how much digging will be involved Preset ground balance Low-battery indicator