CASIO G-SHOCK "Military Black Series" GD-400MB-1JF JAPAN IMPORT Imported Waterproofing function:20 standard atmosphere waterproofing Backlight:LED light (with Autolite function, super illuminator, afterglow function, afterglow time change over (one second /3 second)) Electric wave automatic repair function:Nothing Battery life	:Approximatelythree years Band material:Resin