The classic watch represents the very best of the tough and durable g-shock designs. 50mm yellow bio-based resin case; mineral crystal large digital display provides clear visibility of the time, date, and other essential functions features a countdown timer, flash alert, a full auto calendar, and led super illuminator light iconic front button, now in metal with a “g” mark etched into the mirror-finished surface yellow bio-based resin band; buckle clasp shock resistant; water resistant to 200 meters