LifeTrak Move C300 - Black/Woodland Green with red/black spare band. Bluetooth Smart Connectivity - Transfer data between C300 and iOS devices - Gateway to the world of apps with our open API Automatic Tracking - All-Day Calorie Burn - All-Day Steps - Auto-Calibrated Distance Advanced Calorie Tracking - Proprietary calorie algorithm integrates heart rate and activity data to provide a full day's record of calories burned Dynamic Distance Calibration - Patented pace-based calibration algorithm dynamically adjusts stride length based on identification of walking, jogging and running motions Enhanced Step Filtering - Filters out false steps from step count