Running is more than just exercise — it’s a performance. And Forerunner 645 Music has the tools to help you put on an outstanding show every time you lace up your shoes. It features on-device music storage — so you can run with your favorite tunes — and contactless payments that let you buy what you need without missing a beat. With all those features plus advanced running dynamics and performance monitoring tools, this GPS running watch is the instrument you need to refine the performance.

Music

With up to 500 songs worth of music storage built right into your watch, we’re putting the “beat” in your daily mission to beat yesterday. It’s easy to transfer music from your computer and then queue up your favorite playlist for easy listening through Bluetooth headphones. You can even sync your carefully crafted playlists from select music streaming services¹ to your watch for more ad-free listening. Now you really can leave your phone behind when you head out for a run, because the music that helps keep you moving is right there on your wrist.

Paying Made Easy Always on the run? Feel free to leave your phone and wallet behind. Forerunner 645 Music features Garmin Pay contactless payment solution,² which lets you pay for purchases with your watch. Use it just about anywhere you can tap your card to pay. A bottle of water here, a bite to eat there — just pay, and keep on moving.

Tune up Your Training We’re making it easier to get the data you need to improve your form. Let Forerunner 645 Music measure crucial running metrics³ that you can use to analyze your performance. Biomechanical measurements³, such as cadence, stride length, ground contact time and balance, vertical oscillation and vertical ratio, are the key to understanding your form so you can bring your best on race day. These metrics are available with the addition of a compatible heart rate strap or the compact Running Dynamics Pod, which clips right onto your waistband. Also, take advantage of feature sets to help with cycling and even swim training. In the pool, Forerunner 645 Music will track your distance, pace, stroke count and more.







Monitor Your Performance

Just how effective is your current training plan? Forerunner 645 Music will help you monitor your training and recovery so you can better prepare for a race or training cycle. Training status is a performance monitoring tool that automatically evaluates your recent exercise history and performance indicators to let you know if you’re training productively, peaking or overreaching. The anaerobic training effect metric opens a window of insight to a critical dimension of training, telling you how your training is improving your ability to push the limits. You can even view your overall training load, which measures your exercise volume from the last 7 days and compares it to the optimal range for your fitness and recent training history.

More Ways to Customize Check out the Connect IQ™ store, where you can add personality to Forerunner 645 Music by downloading apps, widgets, watch faces and more. It’s easy and — even better — it’s free. New apps are added every day, so you can keep tabs on when your Uber is arriving, turn on your lights at home with the SmartThings app, and even use the AccuWeather MinuteCast app to find out when the rain will start. With the Face It™ watch face app, choose any image from your photo library, make some tweaks, and set it as your watch’s face.

Stay Connected on the Run

Forerunner 645 Music makes it easy to run without leaving important smart features behind. Once paired with your compatible smartphone, you’ll be able to receive and even respond7 to text messages and see social media updates, emails and more right on your wrist. Find your phone, access music controls, and let friends LiveTrack your runs.

Share and Compete Syncing your activities to Garmin Connect is for more than just storing your data. Garmin Connect™ is a thriving online community where people on the go can connect and compete by joining challenges, encourage each other’s successes and even share their triumphs via social media. Garmin Connect is free and available on the web or on your smartphone with the Garmin Connect™ Mobile app.





Train Your Way Your routine is anything but routine. Forerunner 645 Music 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.



Love the Look

Designed for runners, Forerunner 645 Music features a reliable five-button interface that lets you mark laps with a quick press. Feel free to take this watch outside in all kinds of weather. Not only is it safe for swimming and showering, its Garmin Chroma Display™ is easy to read — even in direct sunlight — and housed under chemically strengthened glass. When you want to change it up, swapping bands is fast and doesn’t require tools. And with up to 7 days of battery life in smartwatch mode and 5 hours in GPS mode with music playback, Forerunner 645 Music is the running partner that can keep up with you.

Choose From Millions of Tracks

You’ll never get bored with your running playlist when you can change it up anytime. Forerunner 645 Music is compatible with some of your favorite streaming services — and more are being added all the time. If you have a premium membership to these compatible services, then every track in their massive library is yours to download for offline listening on your watch. Learn more about the streaming services that are currently available. And check back soon to see who we’re adding next to the list.

Try These Top-notch Headphones

When you’re taking your tunes on the run, make sure you have the right headphones for the job. Forerunner 645 Music pairs effortlessly with a wide variety of Bluetooth wireless technology-enabled headphones, and we’ve identified some great options for you, including buds that stay firmly in place during your most intense runs and have marathon-ready battery life. Learn more about the headphones that will be the perfect match for your new watch.

Track Your Cycle

Get a better understanding of your body using the Garmin Connect menstrual cycle tracking feature. Use it to track cycle details, log physical and emotional symptoms and record personal notes for regular, irregular and menopause transition cycle types. You’ll get education about training and nutrition during each phase of your current cycle, too. With the Connect IQ app8, you’ll get cycle updates — such as period reminders, cycle details and symptoms logged for the day — delivered to your wrist.

Safety and Tracking Features

Forerunner 645 Music 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 smartphone9 — 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.

¹May require premium subscription with a third-party music provider

²View current supported country, payment network and issuing bank information

³When used with Running Dynamics Pod or HRM-Run™ or HRM-Tri™ monitor (sold separately)

4Activity tracking accuracy

5Battery life may vary depending on selected performance mode and usage

6When paired with a compatible smartphone

7Responding capability available for Android™ customers only

8Compatible devices: Forerunner 945, Forerunner 645, Forerunner 645 Music, Forerunner 245, Forerunner 245 Music, vívoactive® 3, vívoactive 3 Music and fēnix 5 Plus Series. Compatible devices coming soon: fēnix® 5 Series, fēnix Chronos and Forerunner 935

9When paired with a compatible smartphone. See safety and tracking features requirements and limitations

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. Android is a registered trademark of Google Inc.