AMAZON ALEXA BUILT-IN: Talk to Amazon Alexa on your Amazfit Band 5 activity fitness tracker. Ask Alexa questions, get translations, set alarms and timers, check the weather, control your smart home devices, and more.
15-DAY BATTERY LIFE: Say goodbye to daily recharge. With a fully charged Amazfit Band 5, you don’t need to bring a charger for a two-week trip. On a single charge, it has enough power to get you charged for 2 whole weeks mind-free.
BLOOD OXYGEN SATURATION MONITOR: You can measure your blood oxygen saturation and understand your physical state with OxygenBeatsTM. Ideal for high-intensity workouts and sports such as marathons and gym workouts.

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Polar Pacer gives modern runners all the essentials, plus a few extras they need to do one thing: RUN. Time, pace, distance, laps, stopwatch, incredibly accurate GPS, precise heart rate tracking, plus the specialized training, sleep and recovery tools.
Enhanced Processor: for faster, smoother, more powerful performance and screen transitions. Rapid charging and data transfer. Up to 35 hours of training time with full GPS and HR tracking on (up to 100 hours in power-save modes).

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TRAINING ASSISTANT: The Pyle Sports Multifunction Digital Watch serves as your very own personal trainer that provides you the perfect way to improve your performance and motivate yourself to train harder. Perfect for running, jogging, exercise, etc
SLEEP MONITOR: Features sleep monitor mode that grades your quality of sleep and gives a score from 0 to 100%. Its internal motion detection circuitry along w/ personal statistic input data grade your rest quality. It has 7 day history record recall