Activity Tracker 4 Fitness & Activity Includes Heart Rate

Use built-in GPS to monitor your speed and range on screen during outdoor activities, cycling, treks, and additional activities. See your workout effort map in the application that displays your pulse changes along your path. Experience Zone Intervals, feel a buzz as you hit your desired heart rate levels while working out, and relish as you gain extra minutes outside of exercise. Receive a 90-day free trial of the Premium to help you active, improve sleep and manage stress. Access all in the Fitbit app. (Valid payment option necessary. Cancel before the free period ends to avoid subscription charges. Offer valid to first-time Premium subscribers exclusively). Operating temp ranges: -20°C to 60°C. Use 24/7 heart rate to track resting heart rate & more accurately calculate calories burned. Link to cell devices requires Bluetooth LE and online connection. Links with Mac OS X 12.2 and later, Apple phones 5S and later, tablet generation 5 gen and more recent, Android 7.0. Observe your SpO2 night-time average and range on wrist, and examine trends over the past week in the Fitbit app. (SpO2 is not offered in all regions. The SpO2 feature is not intended to determine or therapy any illness or for any other medical use). Record your body heat nightly to see how it fluctuates from your personal standard. (Not available in all regions. Only available in the Fitbit app and only displays changes. Not designed for health use). Record exercises live with 20+ goal-based exercise options. It’s also swimproof and water resistant to 50 meters, so you can track swims, wear in the shower, and additional activities. Multi-day charge lasts as long as 7 days and up to 5 hrs when using built-in GPS (varies with usage & other factors). Track sleep stages & examine your application-based sleep rating for an easy way to see how well you slept.