The GDF-100B features a unique front-facing pressure and temperature sensor built into the case that stands out from standard G-Shock designs. This also happens to be the limited edition Blackout Pack version that removes all printed markings and logos from the face of the watch for a striking, minimalist appearance. Features matte black resin band with white face, high intensity Super Illuminator LED, large digital display area, alarm alerts, alarm function, and more. Limited stock.