Equipped with smart blood oxygen monitor, Tempo S2 will keep an eye on your health at any moment. 8 Fitness Modes--Track Your MovementTempo S2 can help to track outdoor running, outdoor walking, biking, hiking, climbing, treadmill, indoor cycling, or yoga. Every movement matters and every movement is tracked. Adopting the Power-Saving technology in the whole system, it stays by your side for up to 20 days* on a single charge. It's colorful, it's beautiful, it's wonderful. Stylish 1.4''color TFT display gives you better vision and makes it look gorgeous on your wrist.