Battery lasts up to 5 days in smartwatch mode. Traditional design with hidden display. Interact with touchscreen and hands move away. Receive smart notifications. Incident Detection. Garmin Connect app. Body Battery Energy Monitoring. Wrist-based Heart Rate. Sleep monitoring and sleep score. Pulse Ox sensor. Connect with smartphone's GPS. Preloaded sports apps. Track steps calories and intensity minutes. Swim resistant up to 50 M. Band width: 20mm. Cocoa case and silicone band. Case size: 40 x 40 x 11mm. Band fits wrists 125-190mm in circumference.