Run with the Garmin Forerunner 245 Music and it will get to know you, mile after mile and song after song. 1.2” sunlight-visible display Garmin coach Heart rate monitoring Built-in sports apps Built-in GPS Running dynamics Body Battery energy monitor Menstrual tracking Smart notifications Up to 7 days of battery life in smartwatch mode Up to 6 hours of battery life in GPS mode with music Wrist-based heart rate Get heart rate data along with alerts if your heart rate is too high or low while you’re at rest. You can even gauge how hard your heart is working during physical activities, even underwater. VO2 max Train smarter with VO2 max, an indicator of how you can expect to perform. This metric even accounts for changes in performance that could be caused by heat or altitude. Pulse Ox sensor This wrist-based sensor estimates your body’s blood oxygen saturation, which can help gauge how your body is absorbing oxygen, especially while you sleep Built for trainers It evaluates your recent exercise history and performance indicators to let you know if you’re training productively, peaking or overreaching. Also you can see how your workouts influence the development of endurance, speed and power with aerobic and anaerobic training effect feedback. It measures your exercise volume of the last 7 days and compares it to the optimal range as per your fitness and recent training history. Safety and tracking features If you feel unsafe or if your watch senses that an incident has occurred, assistance and incident detection features send your location to emergency contacts. Battery life Run your heart out with a watch that’s got the power to keep up. You’ll get up to 7 days of battery life in smartwatch mode and up to 6 hours in GPS mode with music.