Fitbit versa 4

Voice control with Amazon Alexa Built-in** to set reminders, create alarms and more
Improve sleep patterns with Sleep Score and Smart Wake
24/7 heart rate monitor and irregular heart rhythm notifications***
Spotify music controls to listen to your playlist**
Apps and notifications when phone is nearby
Always-on display mode** to get info at a glance
6+ day battery life (varies with use & other factors)