Chase down new PRs with Garmin Forerunner 745. It's made for runners and triathletes like you who need detailed training stats and on-device workouts, plus smartwatch functionality. Easily store and play up to 500 songs on your watch, and connect with Bluetooth headphones (not included) for phone-free listening Sync your playlists from selected music streaming services to put your songs on your wrist when paired with a compatible smartphone (may require premium subscription) Garmin Pay™ contactless payment solution (available for supported cards from participating banks) lets you make payments with your watch—no need to carry cash or cards Onboard color maps feature Trendline™ popularity routing, which uses billions of miles of Garmin Connect™ data to help you find and follow the best paths Assistance (built-in tracking/safety feature) lets you send your real-time location to emergency contacts through a paired compatible smartphone Incident Detection alerts your emergency contacts automatically in the event of certain incidents (e.g., bike crash, collapse during a run); paired smartphone required Switch up your workout routine with preloaded activity profiles for running, triathlon, multisport, cycling, pool swimming, track running, brick workouts and more Additional performance-monitoring features include VO2 max (adjusted for heat and altitude), recovery time, aerobic and anaerobic training effect and a race predictor Watch evaluates your training load and training status to indicate if you're undertraining or overdoing it Health-monitoring tools include wrist-based heart rate, all-day stress tracking, relaxation breathing timer, Body Battery™ energy monitor, sleep analysis and more Get training guidance by syncing structured indoor or outdoor workouts to your device from Garmin Connect™ or other apps (when paired with a compatible smartphone) Wrist-based pulse oximeter is a non-medical device that provides your estimated blood oxygen saturation level—useful when adjusting to higher altitudes Multiple satellite system (GPS, GLONASS and Galileo) network capability allows this watch to track swims, bike rides and runs in more challenging environments than GPS alone Battery life: up to 1 week of battery life in smartwatch mode, 6 hrs. in GPS mode with music, 16 hrs. in GPS mode without music and up to 21 hrs. in UltraTrac™ mode Compatible accessories like the Power Meter and Cadence Sensor (not included) provide advanced cycling or running dynamics to help you reach your race potential