CREPHA Digital Solar Sports Watch for Outdoor Silver F-63-504SV Radio-Controlled Activities,

Case size: (approx.) diameter 45.5 x thickness 17.5 mm Body weight: (approx.) 52g Power: Automatic switching between solar and lithium battery power Waterproofing/Functions: Enhanced waterproofing for everyday use (5 ATM), radio-controlled watch (compatible with both stations), radio wave reception function (three times a day at approximately midnight, 4 AM, and 6 PM), time display (hours, minutes, and seconds), 12/24 hour display switching, calendar display (year, month, date, and day of the week), stopwatch (maximum measurement time: 23 hours, 59 minutes, 59 seconds, and 99 seconds), alarm (ON/OFF setting available), hourly time signal (ON/OFF setting available), countdown timer (setting range: 1 second to 23 hours, 59 minutes), second time (can set another time in addition to the normal time), EL light Warranty period: 1 year