features functions like Pedometer, Heart Rate Monitor, Compass, Altimeter, Barometer, Thermometer, Sunrise Sunset Time, Long Battery Life, 5ATM Waterproof and more. It is a perfect choice for those who love outdoor sports. Features: 3D pedometer, step counter, movement time, calorie, distance. Monitor heart rate with no additional chest strap required. Compass, altimeter, barometer, thermometer. Air pressure trend chart in latest 48 hours. Sunrise and Sunset times all over the world (Default 28 cities). 7 days history record for altitide, air pressure. Digit compass with 16 direction display. Countdown timer, alarm clock, EL backlight. Stopwatch with 10 groups of records. Total ascending, descending height and highest/lowest point. Rechargeable battery with long battery life, 15 days of standby, 2 days of working with heart rate monitor on. 5ATM waterproof, DO NOT press any button under water. Large stainless steel dial and breathable nylon band. Suitable for climbing, running, cycling, swimming.