The Garmin fenix 5S is a multi-sport GPS watch for fitness and adventure. This sleek and compact watch has a rugged build, vibrant glass lens, an excellent battery life, and an adjustable brightness setting making it perfect for cycling. The fenix 5S features a 42mm multi-purpose OLED face that instantly updates you on your heart rate and other training stats. It can even perform smart notifications for specific data you're trying to track. It also has a built-in high sensitivity GPS, GLONASS receiver, altimeter, barometer, 3-axis compass, Bluetooth Low Energy, and ANT+. The fenix 5S is waterproof up to 100 meters and automatically uploads to Garmin Connect. No matter what your activity level is, this watch is perfect for tracking your workout, saving the data, planning out how to improve on your next ride, and sharing your information with your friends. By helping you move a little more each day, you can beat yesterday with the Garmin fenix 5S.Features: Helps you track heart rate and other training stats Rugged design makes it perfect for adventure Uses a vibrant glass lens for a clear view 42mm watch face display width Screen resolution of 218x218 High sensitivity GPS and GLONASS receiver built-in to track your workout Built-in altimeter, barometer, 3-axis compass Built-in Bluetooth Low Energy and ANT+ Comes with preloaded activity profiles Provides preselected smart notifications while working out Automatically uploads to Garmin Connect Uses Connect IQ personalization Rated to be waterproof at up to 100 meters Stays charged up to 9 days in smartwatch mode, up to 14 hours in GPS mode, and up to 40 hours in UltraTrac battery saver mode Compatible with QuickFit 20 watch bands for extra style and customization