Broaden your metal-detecting horizon to both land and sea. Fishers CZ-21 QuickSilver Metal Detector goes with you down to depths of 250 ft., in either saltwater or freshwater, to uncover relics, treasure and adventure. LED indicator gives you quick visualization of possible finds. All-metal, discrimination and pinpoint detection modes match the detectors capabilities to your specific search needs. Sort treasure from trash with 10-segment discrimination. Dial in sensitivity using 10 adjustments. Manual ground balance tunes the detector for accuracy. Low-battery indicator. Includes headphones. Manufacturers two-year limited warranty. Made in USA. Batteries:Four AA (not included). Application:Land or water to depths of 250 ft. Length:32.5 - 48.5. Search coils:8 open-frame waterproof concentric. Frequency:5 and 15kHz. Wt:5.69 lbs. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Metal Detectors.