• Sync music from select premium streaming services, or store up to 1,000 songs on your watch, and connect with headphones (sold separately) enabled with BLUETOOTH^® technology for phone-free listening
• Performance monitoring features include VO2 max and training status with adjustments for heat, altitude acclimation status, training load focus, recovery time, and aerobic and anaerobic training effects
• Garmin Pay™ contactless payment solution lets you make convenient payments with your watch so you can leave your cash and cards at home
• Full-color, onboard maps guide you on your run so you never get lost during your workout
• Safety and tracking features include incident detection (during select activities) and assistance; both send your real-time location to emergency contacts
• Battery life: up to 2 weeks in smartwatch mode, 10 hours in GPS mode with music or up to 60 hours in UltraTrac™ mode
• Features multinetwork (GPS, GLONASS and Galileo) satellite reception to track in more challenging environments than GPS alone.
• Wrist-based Pulse Ox sensor monitors blood oxygen saturation levels to support advanced sleep monitoring and altitude acclimation.
• Wrist-based heartrate.
• Your Forerunner 945 can start tracking metrics like cadence, stride length, ground contact time and balance, vertical oscillation and more with the addition of a compatible or the compact .
• Change things up with ease, thanks to built-in activity profiles for running (indoor/outdoor), cycling (indoor/outdoor), swimming (pool/open water), cross-country skiing, paddle sports, trail running and many more. 

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