Boost your routine with our #1 fitness tracker. Now with our most accurate heart rate, plus Google essentials like Maps, Wallet and YouTube Music controls. Our #1 Tracker. Now With Google Run your day & your routine with Charge 6. See It On Display See your heart rate in real-time when you link Charge 6 to your favorite compatible exercise machines - like treadmills, ellipticals, rowers, exercise bikes and more1. Move To Your Beat Choose your mood with YouTube Music controls2, 3 and get inspired with over 40 exercise modes. Keep up with your body by tracking your heart rate, steps, distance and calories burned. Active Zone Minutes tell you how much time you spend in target heart rate zones. Our Most Accurate Heart Rate On A Tracker11 Get a read on your beat with up to 60% more accurate tracking during vigorous activities like HIIT, spinning and rowing11, 12. Want to know more? The ECG app5 can notify you of a heart rhythm irregularities, an EDA sensor tells you how your body is responding to stress. Plus, see how it all ties into your night with your Sleep Score. Keep Your Day Moving Find your way seamlessly during runs or rides with turn-by-turn directions from Google Maps2. And when you need a snack break on the go, just tap to pay with Google Wallet6, 7. Know Your Body, Nail Your Workout Choose from a library of workouts including HIIT, cycling, strength training, dance cardio & more led by Fitbit's expert trainers. Check your Daily Readiness Score and see if you're ready to go all out or take a rest day. Cardio Fitness Level Get to know your VO2 max and see how well your body uses oxygen when you're working your hardest. Sleep Score Learn about the quality of your previous night's sleep with a personalized Sleep Score. SmartTrack Forget to start tracking? Don't sweat it. SmartTrack automatically recognizes and records workouts. SpO2 & Skin Temperature Spot changes in your blood oxygen levels and skin temperature to know more about your well-being8. 7-Day Battery Life Leave your charger behind on your next long week trip with a tracker that can go for up to 7 days10. Stress Management Score Get a daily score showing your body's physical response to stress - and how your routines can help. Navigation Button Find what you need with an easy side button. Just a quick tap lets you jump to your home screen or see your stats. Smart Notifications Stay in the loop with call, text, calendar and other app notifications - including Gmail, Google Calendar and more9.