Garmin Forerunner 645 Sport Watch (Black)

BH #GAFR645BK • MFR #010-01863-00
Garmin Forerunner 645 Sport Watch (Black)
Key Features
  • Advanced Multi-Sport Data and Statistics
  • Wrist-Based Heart Rate Monitor
  • 1.2" Color Display
  • Activity Tracker Functions
Track your runs, gym workouts, outdoor recreational activities, bike rides, laps in the pool, and more with the Garmin Forerunner 645 Sport Watch. For added motivation Garmin has developed their own online community, simply download the Garmin Connect Mobile app and sync your data to see how you stack up against others within the social community.
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$399.99
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Garmin Forerunner 645 Sport Overview

  • 1Description
  • 2Paying Made Easy
  • 3Tune up Your Training
  • 4Monitor Your Performance
  • 5More Ways to Customize
  • 6Stay Connected on the Run
  • 7Share and Compete
  • 8Train Your Way
  • 9Love the Look
  • 10Clock Features
  • 11Sensors
  • 12Daily Smart Features
  • 13Activity Tracking Features
  • 14Fitness Equipment / Gym
  • 15Training, Planning, and Analysis Features
  • 16Heart Rate Features
  • 17Running Features
  • 18Outdoor Recreation Features
  • 19Cycling Features
  • 20Swimming Features

Track your runs, gym workouts, outdoor recreational activities, bike rides, laps in the pool, and more with the Garmin Forerunner 645 Sport Watch. For added motivation Garmin has developed their own online community, simply download the Garmin Connect Mobile app and sync your data to see how you stack up against others within the social community.

Not only does the Garmin Forerunner 645 just track your activities, it provides deep analysis and insight so you can digest the data. Customizable data pages and activity profiles make it easy to display your data the way you want to see it. You can easily see your GPS speed and distance, your interval training and advanced workout statistics, your VO2 max., your training status, your aerobic and anaerobic training effects, the activity history on the watch, and much more.

In addition to intuitive analysis of your activities, the Garmin Forerunner 645 features a number of heart rate features including HR zones, HR alerts, HR calories, % HR max., % HRR, recovery time, auto max HR, and HR broadcast.

Did you leave your wallet at home while on that run? The Garmin Forerunner 645 has you covered with the Garmin Pay contactless payment solution, which allows you to just tap your watch and go. You can also receive text messages, social media updates, emails, and more right from your sport watch.

Paying Made Easy

The Forerunner 645 Sport Watch features the Garmin Pay contactless payment solution, which lets you pay for purchases with your watch. Use it just about anywhere you can tap your card to pay.

Tune up Your Training

Let the Forerunner 645 Sport Watch measure crucial running metrics that you can use to analyze 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

The Forerunner 645 Sport Watch 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 free to use Connect IQ store, where you can add personality to Forerunner 645 Sport Watch by downloading apps, widgets, watch faces, and more. 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

The Forerunner 645 Sport Watch 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 respond 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

The Forerunner 645 Sport Watch 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, the Forerunner 645 Sport Watch 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 Corning Gorilla Glass 3. 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 14 hours in GPS mode, the Forerunner 645 is the running partner that can keep up with you.

Clock Features

  • Time/date
  • GPS Time Sync
  • Automatic daylight saving time
  • Alarm clock
  • Timer
  • Stopwatch
  • Sunrise/sunset times
  • Face It watch face creator

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 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 (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
  • Customizable data pages
  • Customizable activity profiles
  • Auto Pause
  • Interval training
  • Advanced workouts
  • Downloadable training plans
  • Auto Lap
  • Manual lap
  • Virtual Partner
  • 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)
  • Customizable alerts
  • Audio prompts
  • Finish time
  • 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: 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
UPC: 753759185077

Garmin Forerunner 645 Sport Specs

Display
Display Size1.2" / 30.4 mm
Display TypeMIP LCD
Screen Resolution240 x 240
Watch Crystal MaterialCorning Gorilla Glass 3
Connectivity
Global PositioningGPS
Performance
SensorsOptical Heart Rate
Memory
Memory Retention200 Hours (Activity Data)
Battery
Estimated Battery Life7 Days (Smartwatch Mode)
14 Hours (GPS On)
Physical
MaterialStainless Steel
Water Resistance Depth5 ATM (Pressure Equivalent to 164' / 50 m)
Band
Band MaterialSilicone
General
Dimensions1.7 x 1.7 x 0.5" / 4.3 x 4.3 x 1.4 cm
Weight1.5 oz / 41.8 g
Packaging Info
Package Weight0.33 lb
Box Dimensions (LxWxH)6.6 x 2.8 x 2.6"
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