GPS Running Smartwatch with Contactless Payments and Wrist-based Heart Rate
- Garmin Pay™ contactless payment solution¹ lets you make convenient payments with your watch, so you can leave your cash and cards at home
- Provides advanced running dynamics², including ground contact time balance, stride length, vertical ratio and more
- Uses wrist-based heart rate³ to offer performance monitoring features, including evaluating your current training status
- Connected features4 include smart notifications, automatic uploads to Garmin Connect™ and the ability for others to track your runs with the LiveTrack feature
- Customize with free watch faces, apps and more from our Connect IQ™ store
- Battery life5: up to 7 days in smartwatch mode; 14 hours in GPS mode
Running is more than just exercise — it’s a performance. And Forerunner 645 has the tools to help you put on an outstanding show every time you lace up your shoes. Featuring contactless payments that let you buy what you need while on the go — plus advanced running dynamics and performance monitoring tools — this GPS running watch is the instrument you need to refine the performance.
Train Your Way
Your routine is anything but routine. Forerunner 645 lets you change things up with ease, thanks to built-in activity profiles for running (indoor/outdoor), cycling (indoor/outdoor), swimming (pool), elliptical, paddle sports, strength training and many more. Create your own custom workouts, and download for free from our Garmin Connect online fitness community. Then review your past efforts on the app, or share them with family and friends for added motivation.
Safety and Tracking Features
Forerunner 645 provides safety and tracking features to help provide a little extra peace of mind for you and your loved ones. If anything should happen — and your watch is paired with your compatible smartphone8 — hold the light button down until you feel the watch vibrate 3 times. This activates the assistance feature, which discreetly sends a message with your real-time location to your preloaded emergency contacts. That way, help has an easier time finding you. This watch also has incident detection, which automatically sends a message with your real-time location to preloaded emergency contacts if an incident is detected during an outdoor walk, run or bike activity.