TECHNOLOGY: Lightweight, comfortable design makes the Forerunner® 55 perfect for everyday life Up to 2 weeks of battery life in Smartwatch mode and 20 hours in GPS mode Navigate the outdoors with multiple global navigation satellite systems (GPS, GLONASS, and Galileo) Features a high-definition, sunlight-readable 1.04” diameter display Waterproof resistant to 50 meters Smartphone connectivity allows you to see phone notifications and messages, play and store music with premium streaming service support USES: Includes sensors for enhanced wrist heart rate and sleep monitoring GPS functionality allows you to track your steps, pace, distance, and intervals with ease Track your body’s response to stress levels and daily activity all from your wrist Track steps, intensity minutes, calories burned, and more with ease Gain a better understanding of your health and wellness with real time data and statistics Use preloaded activity profiles for cycling, treadmill running, indoor track, elliptical, cardio, yoga and more Features easy-to-follow, animated cardio, strength, and yoga workouts on the watch screen Receive recovery time updates following workouts to let you know when your body is ready for another hard workout SPECIAL FEATURES: Body Battery™ Energy Monitor feature allows you to track your body’s energy levels helping you find ideal times for activity and rest Garmin Coach free adaptive training plans offer guidance from expert coaches and adapt to you and your goals PacePro™ feature offers grade-adjusted pace guidance throughout your activity Track your runs with accurate lap distances and receive estimated finish times for selected routes Receive daily training guidance and run recommendations based on your training history, fitness level, and recovery time Better your running form with real-time updates and notifications when you’ve gone outside your target cadence range Fitness Age feature uses chronological age, resting heart rate, and other factors to estimate if your body is younger or older than you are Use the Garmin Connect™ app to access Women’s Health Tracking features such as menstrual cycle or pregnancy trackers Access to Connect IQ™ store let you download custom watch faces, add data fields, and get additional apps and widgets Safety and Tracking features let you send your location to emergency contacts if an incident occurs Use the Garmin Connect™ app to interact with a large online community where users can connect and compete