All-day activity tracking: Track steps, distance, calories burned, active minutes, you can check daily activity and time on OLED display or Fitpro APP. Advanced Sensors that Measure Your Heart Rate Throughout the Day and Analyze Your Sleep. The D18 PLus watch 3S also has a Exciting New Feature: The SpO2 Monitor. With Just a Simple Touch, You Can Measure SpO2 Oxygen Saturation. You Can Keep an Eye on Your Health at all Times on the Display. In This Way, the Smartwatch Helps to Develop an Active and Fit Lifestyle. You will receive only notification to See Calls & Messages on Your Wrist: Receive/Rejection call, calendar, SMS and SNS (Facebook, WhatsApp, LinkedIn, Instagram, and Twitter) notifications on display, fitness tracker band let you never miss the messages that matter. fitness band will Sync after installing fitness band Fitpro application from play store.To set time of watch you have to install Fitpro application.Switch ON bluetooth and location whlie connecting fitness band from app. Smart Notifications: In Addition To Tracking, This Smartwatch Connects To The App, Available For All Smartphones So You Can Receive Incoming Phone Messages, Calls, And More. The Smartwatch Offers Bluetooth Connectivity. Get All Your Messages And Notifications Sent Straight To Your Wrist. SPECS : Bluetooth Connectivity | Blood Pressure Monitor | Sleep Tracker | Heart Rate Tracker | Remote Control Camera | Social Media Notifications | Call Reminders | SPO2 Monitoring