Amazfit OS

AMAZON ALEXA BUILT-IN: Talk to Amazon Alexa on your Amazfit Band 5. Ask questions, get translations, set alarms, and timers, create shopping lists, check the weather, control your smart home devices and more.
BLOOD OXYGEN SATURATION MONITOR: With Amazfit Band 5 you can measure your blood oxygen saturation and understand your physical state with OxygenBeats. Ideal during high-intensity workouts and sports such as marathons and gym workouts.
24/7 HEART RATE, SLEEP AND ACTIVITY TRACKER: The Amazfit Band 5 precise optical heart rate monitoring allows you to accurately track real-time steps taken, all-day heart rate monitoring, distance traveled, calories burned, and sleeping patterns.