Why use HitFit Pro: 1. Pedometer: Calculate steps, calories, activity time, distance 2. Sleep Tracker: Record and analyze your sleep. 3. Notification Reminder: Never miss notification on your phone.The app will read the SMS and call records and push them to the watch, and quickly reply to the call by SMS 4. Heart rate support: measure your heart rate and save your log. 5. Exercise Tracker: Exercise support, record your calories, your GPS route, etc. 6. Daily Tracking: Track your life and exercis