You can measure your blood and understand your physical state with Oxygen Beats. Ideal for high-intensity workouts and sports such as marathons and gym workouts. High heart rate warning. This health tracker can also monitor your sleep quality as well as your daily naps. On a single charge, it has enough power to get you charged for 2 whole weeks mind-free. Set alarms, and timers, check the weather, control your smart home devices, and more.