Forerunner 645

GPS running watch with contactless payments and wrist-based heart rate

• Includes the Garmin Pay^™ Ready contactless payment method¹ that 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
• 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 the perfect show every time you lace up your shoes. And contactless payments let you buy what you need without missing a beat. With all that plus advanced running dynamics and performance monitoring tools, this GPS running watch is the instrument you need perfect the act.

Paying made easy

Always on the run? Feel free to leave your phone and wallet behind. Forerunner 645 features the Garmin Pay Ready contactless payment method¹, 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 measure crucial running metrics² that you can use to analyse your performance. Biomechanical measurements, 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 will track your distance, pace, stroke count and more.

Monitor your performance

Just how effective is your current training plan? Forerunner 645 will help you monitor your training and recovery so you can better prepare for a race or training cycle. Training status is a new 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 new 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 customise

Check out our Connect IQ™ store, where you can add personality to Forerunner 645 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 makes it easy to run without leaving important smart features behind. Once paired with your compatible smartphone you’ll be able to receive and respond⁶ to text messages and see social media updates, emails and more right on your wrist. You can even use it to find your phone. 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 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

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 extra-durable Corning^® Gorilla^® Glass. When you want to change it up, swapping bands is fast and doesn’t require tools. The perfect everyday companion, this lightweight watch is rated to 5 ATM (50 meters) to be safe for swimming and showering. And with up to 7 days of battery life in smartwatch mode and 14 hours in GPS mode, Forerunner 645 is the running partner that can keep up with you.

¹ View current supported country, payment network and issuing bank information
² When used with Running Dynamics Pod (sold separately) or HRM-Run^™ or HRM-Tri^™ monitor.
³Activity tracking accuracy
⁴ When paired with a compatible smartphone
⁵ Under typical use; battery life may vary depending on usage
⁶ Responding capability available for Android™ customers only. Android^™ is a trademark of Google Inc.
The Bluetooth^® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Garmin is under license.