The ft7 looks and works as a digital wrist watch with dual time zones date of the day and alarm features it also comes with a chest strap that measures your heart rate and transmits wirelessly it to the watch wear it when you go for a brisk walk jog or yoga session an alarm will sound if your heart rate falls outside the desired zone which is a balance between cardiac safety and an effective workout polar owncal shows calories burnt polar owncode prevents cross talk from other heart rate