Portable Hand-Held Metal Detector,convenient to take 25pcs/carton,Carton Dimension: ... is a Leathery cover outfits to the metal detector which makes the metal detector be convenient to take. There is ... a on-off which can switch the metal detector from sound alarm to light alarm, or from ... on-off is pressed, the metal detector will only alarm when it finds big metal object (before you finish the ...