... function; Touch-on pulse measuring, showing dynamic pulse 3 second EL backlight Specifications: Hour ,minute, second, year (2000~2049),month, day ... .01 second resolution; memories for 10 (L0~L9)LAP TIME. EL backbright. 3V battery operation.Operating temperature: -10 °C ~ +60 °COperating ... (10 seconds the alarm once a day, 3 seconds 2, EL light daily): 18 months (Japan) t