[Adjustable purple 12mm resin strap fits up to 7.5-inch wrist circumference Easy-touch heart rate monitor; 7-day activity tracker measures calories steps & distance; 100-hour chronograph with 10-lap memory 24-hour countdown timer; customizable alarm; 24-hour military time mode; 2 time zones; day date & month calendar Purple & rose gold-tone 33mm resin case; acrylic lens; gray digital display; Indiglo light-up watch dial Water-resistant to 100m (330 ft): In general suitable for snorkeling as well as swimming but not diving]