Use built-in amazon alexa to get quick news, info and weather, set bedtime reminders and alarms, control your smart home devices and more—just by speaking to your watch
Based on your heart rate, time asleep, restlessness and breathing, sleep score helps you better understand your sleep quality each night. Also track your time in light, deep, and rem sleep stages
Use 24/7 heart rate tracking to better track calorie burn, optimize effort during workouts, see your resting heart rate trends and cardio fitness level in the fitbit app
Store and play 300+ songs—plus control spotify from your wrist. Subscriptions required
With a larger display and an always-on option, your information is always a quick glance away. Always-on display requires more frequent charging
Get notifications for calls, texts, calendar events and apps like gmail and facebook—plus send quick replies using your voice. Works when your phone is nearby. Quick replies on android only
Works around the clock with 5+ day battery life. Varies with use and other factors