Clever Training

Garmin Forerunner 645 GPS Watch

$399.99 - 449.99

Item # 010-01863-Parent
  • Description
  • Q & A
  • Reviews

Garmin Forerunner 645 GPS Watch

Still running on “empty” without all the real tools you need to enhance your run, expand your tracking to other activites, and easily move through your day? Set your eyes on the new Forerunner 645 and 645 Music. Strutting a suave metal bezel and interchangeable bands that takes the traditionally super sporty Forerunner line-up to office-appropriate, 645 delivers it all: advanced running dynamics, 24/7 heart rate and stress level monitoring, the ability to pay for purchases with your wallet safely back home, added sports like cycling, swimming, elliptical, cardio and more..and music storage if you choose. Because you’re not just a runner—you’re a well-rounded athlete with a life that moves quickly—and Forerunner 645/645 Music will go right along with you stride for stride.


  • Gotta have those background beats while you run, spin, or log in a cardio session? The 645 Music lets you download up to 500 songs right from your computer or from offline playlists you’ve saved via popular radio streaming services, including Spotify, Deezer, iHeartRadio and more. Music version only.
  • Don’t sweat who might lift your wallet during a 5k or a run at the gym—leave your cash and credit cards safely at home and pay for race-day essentials, gas, coffee, water and more with the built-in contactless payment option.
  • In addition to the traditional pace and distance, get the numbers that will help improve your stride such as ground contact time balance, stride length, VO2 max, recovery time, race predictor, lactate threshold and vertical ratio.
  • Don’t just SEE your incoming text messages—respond to them too via prewritten messages that acknowledge texts quickly and easily.
  • Wandering a little outside of your comfort zone? 645 has GLONASS (in addition to GPS) to add even more satellites for accurate tracking wherever you decide to roam.
  • Are you training productively? 645 will let you know if you’ve overtrained or even started to peak, so you can make more informed decisions about your runs and fitness activity.
  • Download strength, cardio, running, and cycling workouts or create your own and use Garmin Elevate to track your heart rate during workouts and beyond.
  • Give loved ones the ability to track you during runs with LiveTrack.
  • Connect with other athletes/Garmin users via Garmin Connect and participate in challenges, social media sharing and more.
  • Get up to a week of charge time in smartwatch mode or use all day (12 hours) in GPS mode before recharging.
  • Download all the apps you use and love on your smartphone, customize your Forerunner 645 watch face and get widgets that keep you informed.
  • Need to switch out your usual style for a wedding, business event or just because? The quick-release bands are designed to easily swap bands that lock right into place.
  • Compatible with other Garmin products you use to enhance your sport and lifestyle such as VIRB, Varia Bike Lights, Varia Vision, Varia rearview radar support, HRM-Run (used with advanced cycling dynamics), and the Running Dynamics Pod.


  • Wi-Fi connectivity
  • ANT+®/USB/BLE connectivity
  • Smartphone notifications
  • Connect IQ apps
  • Wrist-based HR
  • Barometric altimeter
  • Spotify compatible (Music model only)
  • MP3/AAC player (Music model only)
  • Activity Tracking
  • Floors climbed
  • Intensity minutes
  • VIRB remote control
  • Extended timeout
  • Auto Lap feature
  • Manual lap
  • Configurable lap pop-up
  • Auto Pause feature
  • Manual lap
  • Configurable lap pop-up
  • Auto Pause feature
  • Auto/manual multisport
  • Alerts
  • Workouts
  • Training Plans
  • Metronome
  • Pool swim activity
  • Configurable data fields
  • Aerobic training effect
  • Anaerobic training effect
  • Training Status
  • Training load
  • VO2 Max
  • Recovery time
  • Race predictor
  • Auto max HR
  • Lactate threshold
  • HRV stress test
  • Performance condition
  • Ground contact time
  • GCT balance
  • Cadence
  • Vertical oscillation
  • Stride length
  • Vertical ratio
  • Bike speed and cadence
  • Varia Vision in-sight display
  • Varia smart bike lights support
  • Varia rearview radar support

Whats In The Box:

  • Forerunner 645
  • Charge cable
  • Documentation
Q & A