Police, navies, rescue forces and pleasure boaters worldwide use (and are grateful for) their Sea Searcher Recovery Magnet, everyday. The specially made side plates channel the power of the strontium-ferrite core so that in perfect contact it has a capacity of up to 140-lb (64kg) and with the keeper plate fitted is compass safe at six feet. Measures 4x3.25x1.25". Weighs 1-kg.