Get your fitness journey back on track with the Fitbit Charge 6. It has a whopping 7 days of battery life so you can track an entire weeks' worth of data without running out of juice. Even when you're asleep, your Fitbit is monitoring your heart rate, blood oxygen, skin temperature and more, for a well-rounded overview of your health. With a daily sleep score, you'll be able to tell how soundly your slept which means you can improve your health from all angles. Good to know - See how you're dealing with day to day stressors with the daily personalised stress management score - Check your heart rate when working out to see if you're in fat burn, cardio or peak zones - You'll be notified of any irregular heart rhythms that can be signs of atrial fibrillation - Track steps, distance and calories, and see how long you're staying in the active zone - Choose from 40 exercise modes, and SmartTrack starts tracking automatically - The water resistance means you can swim, sweat or get caught in a downpour without worrying