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Garmin 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.

garmin pay

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.

Training

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.

General

Lens Material

Corning® Gorilla® Glass 3

Bezel Material

Stainless steel

Quick Release Bands

yes (20 mm, Industry standard)

Strap material

Silicone

Physical size

42.5 x 42.5 x 13.5 mm

Weight

42.2 g

Water rating

5 ATM

Display type

Sunlight-visible, transflective memory-in-pixel (MIP)

Display size

1.2 (30.4 mm) diameter

Display resolution

240 x 240 pixels

Colour display

Battery life

Smartwatch Mode: Up to 7 days

GPS mode: Up to 14 hours

Memory/History

200 hours of activity data

Clock Features

Time/date

GPS Time Sync

Automatic daylight saving time

Alarm clock

Timer

Stopwatch

Sunrise/sunset times

Sensors

GPS

GLONASS

Garmin Elevate™ wrist heart rate monitor

Barometric altimeter

Compass

Gyroscope

Accelerometer

Thermometer

Daily Smart Features

Connectivity

Bluetooth®, ANT+®, Wi-Fi®

Connect IQ™ (downloadable watch faces, data fields, widgets and apps)

Smart notifications

Text response/reject phone call with text (Android™ only)

Calendar

Weather

Controls smartphone music

Find My Phone

Find My Watch

VIRB® Camera Remote

Smartphone compatibility

iPhone® and Android™

Compatible with Garmin Connect™ Mobile

Garmin Pay™

Activity Tracking Features

Step counter

Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)

Auto goal (learns your activity level and assigns a daily step goal)

Sleep monitoring (monitors total sleep and periods of movement or restful sleep)

Calories burned

Floors climbed

Distance traveled

Intensity minutes

TrueUp™

Move IQ™

Fitness Age

yes (in app)

Fitness Equipment/Gym

Preloaded gym activity profiles

Strength Training, Cardio Training, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing and Yoga

Cardio workouts

Strength workouts

Automatic rep counting

Training, Planning and Analysis Features

GPS speed and distance

Customisable screen(s)

Customisable activity profiles

Auto Pause®

Interval training

Advanced workouts

Downloadable training plans

Auto Lap®

Manual lap

Configurable lap alerts

V02 max

Training Status (lets you see if you’re training effectively by tracking your training history and fitness level trend.)

Training Load (your total training load for the last 7 days calculated from estimated EPOC)

Training Effect (aerobic)

Training Effect (anaerobic)

Customisable alerts

Audio prompts

Finish time

Virtual Partner

Race an Activity

Course guidance

Segments (Live, Garmin)

Strava features (Beacon, live segments)

LiveTrack

Touch and/or button lock

Auto scroll

Activity history on watch

Heart Rate Features

HR zones

HR alerts

HR calories

% HR max

% HRR

Recovery time

Auto max HR

HR Broadcast (broadcasts HR data over ANT+™ to paired devices)

Running Features

Preloaded run profiles

yes (Running, Treadmill Running, Indoor Track)

GPS-based distance, time and pace

Running dynamics

Cadence (provides real-time number of steps per minute)

Performance condition (after running 6–20 minutes, compares your real-time condition to your average fitness level)

Run workouts

Race predictor

Foot pod capable

Outdoor Recreation Features

Preloaded outdoor recreation profiles

Skiing, Snowboarding, XC Skiing, Stand up Paddleboarding, Rowing

Point-to-point navigation

Bread crumb trail in real time

Back to start

TracBack®

UltraTrac mode

Elevation profile

Distance to destination

Vertical speed

Total ascent/descent

GPS coordinates

Cycling Features

Preloaded cycling profiles

Biking, Indoor Biking

Courses

Race an activity

Time/distance alerts (triggers alarm when you reach goal)

Compatible with Varia Vision™ (head-mounted display)

Compatible with Varia™ radar (rear-facing radar)

Compatible with Varia™ lights

Speed and cadence sensor support (with sensor)

yes (ANT+® and Bluetooth® Smart)

Swimming Features

Preloaded swim profiles

Pool Swimming

Pool swim metrics (lengths, distance, pace, stroke count/rate, calories)

Stroke type detection (freestyle, backstroke, breaststroke, butterfly)

Swim efficiency (SWOLF)

Drill logging

Pool swim workouts

IN THE BOX:

Forerunner 645

Charging cable

Documentation

Gender UNISEX
Recommended Use Swimming
Recommended Use Golf
Recommended Use Cycling
Recommended Use Running
Features Wrist heart rate
Brand GARMIN