Allows continuous (many hours) recording of area while you're wearing them.
No cam visible but once on a laptop you can check every square inch of a gold zone, frame by frame using ez mF software.
Range is 100s of yards/meters distance; 12 m depth
Now with Chroma II ! http://maxfynd.com/products/gold-detecting-cameras/chroma-gold/mineral/gem-detection-system