Easy-to-use running watch monitors heart rate (this is not a medical device) at the wrist and uses GPS to track how far, how fast and where youve run. Special Feature: Bluetooth.- Battery life: up to 2 weeks in smartwatch mode; up to 20 hours in GPS mode.- Plan your race day strategy with the PacePro feature (not compatible with on-device courses), which offers GPS-based pace guidance for a selected course or distance.- Run your best with helpful training tools, including race time predictions and finish time estimates.- Track all the ways you move with built-in activity profiles for running, cycling, track run, virtual run, pool swim, Pilates, HIIT, breathwork and more.- Tune in to your body with advanced wellness features, such as intensity minutes, fitness age, all-day respiration and more.- Customize your watch with free watch faces, data fields, apps and widgets from the Connect IQ Store (requires GARMIN Connect app and Connect IQ app loaded on a compatible smartphone).- Take the guesswork out of training with suggested workouts of varying intensities based on your training history, fitness level and recovery time