It's a shame I didn't have these unusual sandals with me at the beach over the weekend. I might  have found some spare change!

Hammacher Schlemmer today added to its catalog The Metal Detecting Sandals ($59.95), wearable metal detectors that let you find buried treasure with your feet. The Metal Detecting Sandals, according to a press release, have a "copper coil built into the right sandal--powered by a battery pack that straps to your calf by an elastic band." The sandals use what's called "beat frequency oscillation technology" in order to create a magnetic field. The 9V battery pack  then alerts the wearer of metal up to 2 feet underfoot via flashing red LED lights and either a vibration or an audible buzz.

Providing up to 6 hours of use on a single charge, the sandals have PVC uppers, non-skid soles, and polyurethane foam footbeds; they are available in two unisex sizes.