Regatta watch basic functions calendar date display snooze function stop watch world clock alarm series casio baby g water resistant to 100m 10 atm suitable for ladies sailing functions yachting timer display feature 1224 hour format display analogue clock mechanism quartz illuminated display case material resin watch strap resin clasp pin buckle housing design round case size 43 mm case height 128 mm weight 43 g dial colour black watc