This easy-to-use fitness tracker packs 24/7 heart rate, Active Zone Minutes and more. Your heart, your health. Earn Active Zone Minutes based on your target heart rate zones and see when you enter peak, cardio, and fat burn. The guided workouts in Premium will get your heart pumping and help you maximize exercise sessions. With up to 10 days of battery life on your wrist, and a whole year free of Fitbit Premium for new Premium user, you’ll have the guidance and accountability you need to reach your goals.