Health Fitness Smartwatch Heart Rate, Music, Alexa Sleep Swim TrackingUse Alexa built in to get quick news and information, check the weather, set timers and alarms, control your smart home devices and more all through the sound of your voice (third party app may be required; amazon Alexa not available in all countries) Based on your heart rate, time asleep and restlessness, sleep score helps you better understand your sleep quality each night; also track your time in light, deep and rem sleep stages and get personal