Detects objects buried up to 6 inches below the surface. Water resistant base lets user search puddles and other moist areas. Height is adjustable. LED lights make it easier to search in low-light situation Toys"R"Us Canada Exclusive - Edu Science - Metal detector. Everybody loves a treasure hunt, and the Metal Detector is easy-to-use and will have your junior explorer sweeping for hidden valuables in no time. Different tones will identify various precious metals buried up to 6 inches, and LED lights allow for low light or nighttime searching.