Casio G-Shock Solar GST-B400-1AER crbonio Core Guard watch. Watch with steel case with a diameter of 49 mm and a thickness of 14 mm. Gray analogue and digital dial. Black resin strap with buckle closure. Tough Solar Model, Dual LED Light, Mobile Link, Hand Shift Function, 38 World Time Zones, 1/100 Second Stopwatch Measurement Capacity, Countdown Timer, 5 Daily Alarms, Hourly Time Signal , Battery level indicator, Energy saving, Full auto calendar, 12/24 hour format, Button operation tone on / off, Date / month display swap, Day display, Regular timekeeping, Accuracy: ± 15 seconds per month , ca. battery operating time: 7 months with rechargeable battery. Delivered with original box and official guarantee. bf22