COMPACT - Forerunner 25 provides a larger display in a thinner watch with a 32% larger active display area than the Forerunner 15. Strap Material - SiliconeCONNECTED 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 MobileGPS - Acquire satellites quickly to track how far, how fast and where you run - even under tree cover. Display size: 0.91 x 0.91 inches (23.0 x 23.0 mm)ACTIVITY TRACKING Count your steps, calories and distance throughout the day. The inactivity indicator motivates you to move when you've been sitting too longLONG 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)