Welcome to the tone-on-tone G-SHOCK—the latest in popular monochromatic color schemes from Casio. Light and strong, this timepiece has a 45.4mm gray carbon case with a stainless steel back, an octagon-shaped gray resin bezel, easy-to-read black analog/digital dial, carbon core guard structure for shock resistance, metal wire face protector bars, Super Illuminator lighting and a mineral crystal. Functions include a unique day dial, timer, alarm, stopwatch and easy button operation. The gray resin strap secures with a buckle clasp. Water-resistant to 200 meters, this timepiece has a three-year mercury-free battery.