• Tracks steps, distance, calories burned, and activity time for fitness monitoring. • Monitors heart rate and blood oxygen levels. • Displays notifications for calls, texts, and app alerts from your smartphone. • Rubber band is comfortable for extended wear during workouts. • Brand new condition, no scratches or signs of wear. • Compatible with Android and iOS smartphones via Bluetooth. • Battery lasts up to 7 days on a single charge, depending on usage.