Product parameters Bracelet Size 49MM True snap Weight 39g Color Black、White, Pink,Blue Main Functions 2 in 1 gift set more→Bluetooth Calling: Dialpad, Phonebook Smart Alerts: Messages, Push Messages Health Monitoring: Heart Rate Monitor, Blood Pressure Monitor, Blood Oxygen Monitor, ECG, Sleep Monitor Three Rings of Health Multi-Sport Mode: Running, Cycling, Strength Training, Basketball, Tennis, Volleyball, Soccer Bluetooth Photo、Music Control …