Digital quartz movement featuring heart monitor, Monitor's heart rate, intensity, and target alarm, Energy-consumed measurement, 200 laps (time and heart rate), World time, Alarm, Electroluminescent backlight, Black polyurethane case with blue bezel, Black polyurethane selector buttons, Stainless steel caseback, 50 meters/165 feet water resistant Style: Sports Material: Rubber Dial Color: Blue Movement: Quartz Band Length: 8 Power: Battery Case Diameter: 38 Fastener: Buckle