Garmin Forerunner 620 is a high-sensitivity GPS receiver that provides accurate location and tracking data for a variety of activities, including running, cycling, hiking, and swimming. It features a large, easy-to-read display, and a long battery life of up to 12 hours in GPS mode. The device also has a built-in accelerometer, which allows it to track your steps and distance even when you're not using the GPS. Additionally, the Forerunner 620 can be paired with a compatible smartphone to receive notifications, control music, and upload your activities to the Garmin Connect online community.