Description Fisher CZ-21 Metal Detector features: Multi-use, Hunt Anywhere: On the beach or in mineralized soil, automatically. Backed by a 2 Year Guarantee: 2 year limited warranty. Dual Frequency: 5 & 15 kHz High Performance, Submersible, Target-ID Metal Detector for underwater, surf, beach, anywhere in all kinds of weather New Improved pinpointer control Improved water proofing to 250 feet Comes with 8″ Search coil Two Year Warranty