ANTplus and Bluetooth Smart sensors

Solar Powered Multisport GPS Watch with large 1.4 inches display (36% larger than previous fenix models) uses the sun’s energy to extend battery life and assure more on-wrist time for your off-grid activities
Enhanced estimated wrist heart rate and Pulse Ox to support advanced sleep monitoring and altitude acclimation at high elevations (this is not a medical device and is not intended for use in the diagnosis or monitoring of any medical condition)
Advanced training features include PacePro for grade-adjusted pace guidance throughout your activity plus environmentally adjusted VO2 max and training status estimates