Optimize workouts and recovery with the Fitbit Versa 4. Daily Readiness Score recommends heart-rate zones and workout intensity based on real-time data. Track 40+ exercise types, view pace and distance with built-in GPS, and monitor 24/7 heart rate with PurePulse 2.0, SPO2 and skin temperature variation plus high/low heart-rate alerts. Use Alexa, smart notifications and Find My Phone, wake with Smart Wake, and enjoy up to 6 days of battery life in a slim aluminium design. Includes device, small and large straps, and charger.