Fitness tracker can track your physical index, such as heart rate, steps, calories burned.Muti- sport modes to choose IP67Water-proof,dust-proof, this smart bracelets can adapt to short-term soaks, such as washing hands or showers. Heart rate and sleep monitoring: smart band monitors heart rate to help you do exercise science and track your sleep quality Send call, SMS and SNS notifications on your wrist thus you will never miss any important call or message. You can look for your phone by your activity bracelet within Bluetooth working distance. We promise a 24-month warranty. Any questions about our products or service, please do not hesitate to contact us. We will do our best to solve and improve it ASAP.