Regatta watch basic functions alarm date display stop watch countdown timer series nixon the supertide water resistant to 100m 10 atm suitable for men sailing functions tide function display digital clock mechanism quartz illuminated display case materials polycarbonate stainless steel watch strap silicone clasp pin buckle housing design square numerals arabic case size 45 x 40 mm case height 13 mm weight 90 g dial colour black watch stra