［Health Monitoring and Useful Functions］The KAVVO Oyster Urban applies fitness tracking, heart rate monitor, blood oxygen monitor and sleep tracker. With this device you can answer or make calls, receive message notification, check the weather, set alarms and select multiple sport modes. KAVVO Smart Watch With Mechanical Rotating Bezel and 24 Gears SUS316 Magic Crown which is comfortable in use. The Shock Resistant Tempered glass(2.5mm) can protect it in different scenes. Unsensible Wearing(≦54g) could release the pressure while sporting. With 1.32" 272ppi HD Screen(360*360) is friendly for everyone. Ultra functions including Local Bluetooth Call and Health monitoring (Calculate Steps, Record Sleeping data, Monitor Heart Rate & Blood-oxygen, Also Multi Sport Modes Choice) which could satisfy your multiple use in daily life. It consists 10-days work after full charged.