G-Shock G-LIDE and date calendar

and date calendar

Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal

Additionally

Module: 5640

G-Shock G-LIDE and date calendarFrom catching waves to grabbing brunch, this watch delivers both style and substance. Its sturdy bezel and clean display offer easy access to tide charts and surf data while the rugged build stands up to saltwater and impact. Features like step tracking and alarms support workouts and errands which makes it a versatile surf ready accessory you can trust all day long. Features Quartz digital movement with Bluetooth for tide moon and sunrise sunset data