Best Metal Detectors: Model: MD-5008 Power: DC12V Signal ... lot of fun MD5008 China Manufacture With The Best Metal Detectors :Main features: 1,a balance between the lines ... 4, can be identified through headphones sound of metal products parameters: 5,maximum depth of exploration: small ... alarm and instrumentation, with the probing depth exploration of metal the size, shape, weight, have great relations, ...