This is a rare BABY-G model featuring time correction via solar charging and radio wave reception. Retail Price: 19,800 yen Excerpt from Amazon: Shock-resistant structure: Features a shock-resistant structure that is resistant to shocks and vibrations. 10-bar water resistance: Equipped with 10-bar water resistance. Tough Solar: Casio's unique solar charging system that combines a solar panel that generates power from even the slightest light with a large-capacity secondary battery to stably operate various functions that require heavy loads. Other product specifications: Radio wave reception function / World time / Stopwatch / Timer / Alarm/hourly time signal / Battery indicator display / Power saving function / Full auto-calendar / 12/24-hour display switching / Operation sound ON/OFF switching function / Date display / Day of the week display / LED backlight