Fitbit Charge 4 Fitness and Activity Tracker with Built-in GPS
Features- Active Zone Minutes alert you when you're in your personalised Fat Burn, Cardio or Peak heart rate zones After outdoor workouts, see a workout intensity map in the app that shows your heart rate changes along your route Use built-in GPS to see your pace and distance on screen during outdoor runs, cycles, hikes and more Track sleep stages & review your in-app Sleep Score for an easy way to see how well you slept Multi-day battery lasts up to 7 days and up to 5 hours when using built-in GPS. Varies with use & other factors Use 24/7 heart rate to track resting heart rate & better measure calorie burn Get call, text and smartphone app notifications on your wrist. Plus, send quick replies to texts (Android only). Available when your phone is nearby Technical Details Brand Fitbit Material Silicone Colour Black Compatible Devices Smartphones Screen Size 1.5 Inches Item Weight 100 Grams Battery Life 5 Hours Sensor Type Sleep Battery Description Lithium-Ion Polymer Product Dimensions 24.7L x 2.9W x 1.2H Centimeters Manufacturer Fitbit Item model number FB417BKBK ASIN B084CQ41M2