G-Shock Watch Sand Effect GX-56SL-4ER. Trek into the wilderness with confidence, wearing the GX-56SL-4ER. The clever use of mixed-colour molding blends resins of two different earthy colours for a bezel and band reminiscent of the sandy textures and colours of desert regions. Features include solar power, 200M water resistancy and an auto light, useful functions when out on the field or in an urban environment.