Garmin Forerunner 25 Bundle with Heart Rate Monitor (Large) - Black and Blue COMPACT - Forerunner 25 provides a larger display in a thinner watch with a 32% larger active display area than the Forerunner 15. CONNECTED FEATURES - Instantly share runs and activity tracking progress with friends, family and the world via social media by pairing a compatible device with Garmin ConnectTM Mobile. GPS - Acquire satellites quickly to track how far, how fast and where you run - even under tree cover. ACTIVITY TRACKING Count your steps, calories and distance throughout the day. The inactivity indicator motivates you to move when youve been sitting too long. LONG BATTERY LIFE - Up to 10 hours of battery life in training mode or 10 weeks in watch/activity tracking mode (Large versions). Up to 8 hours of battery life in training mode or 8 weeks in watch/activity tracking mode (Small versions).