Garmin Forerunner 645 Music GPS Running Watch


Garmin Forerunner 645 Music GPS Running Watch

Looking for music while you track your workout? Easily download up to 500 songs to your watch, and connect with Bluetooth® headphones, (sold separately) for phone-free listening.
  • Provides advanced running dynamics including ground contact time balance, stride length, vertical ratio and more
  • Uses wrist-based heart rate to offer performance monitoring features, including evaluating your current training status
  • Syncs music from select streaming services for offline listening
  • Sunlight-visible, transflective memory-in-pixel (MIP) color display
  • Chemically-strengthed glass lens 
  • Stainless steel bezel 
  • Silicone strap 
  • Battery life: Up to seven days in smartwatch mode; five hours in GPS mode with music
  • Memory / history: 200 hours of activity data
  • Water rating: 5 ATM
  • Display resolution: 240 x 240 pixels    
  • Display diameter: 1.2"
  • Dimensions: 1.7" x 1.7" x 0.5"
  • Fits: 5 - 8" wrist circumference
  • Weight: 1.5 oz.
  • Time / date
  • GPS time sync
  • Automatic daylight saving time
  • Alarm clock
  • Timer
  • Stopwatch
  • Sunrise / sunset times
  • Face It™ watch face creator
  • GPS
  • Garmin® Elevate™ wrist heart rate monitor
  • Barometric altimeter
  • Compass
  • Gyroscope
  • Accelerometer
  • Thermometer

Daily smart features:

  • Bluetooth, ANT+®, Wi-Fi® connectivity
  • 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
  • Plays and controls watch music
  • Musice storage
  • Find My Phone
  • Find My Watch
  • VIRB® Camera Remote
  • iPhone® and Android smartphone compatible
  • Compatible with Garmin Connect™ Mobile
  • Garmin Pay™
Activity tracking:
  • Step counter
  • Move bar (displays on device after period of inactivity; walk for a couple of minutes to reset it)
  • Auto goal (learns your activity level and assigns 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 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:

  • GPS speed and distance
  • Customizable data pages
  • Customizable 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 training history and fitness level trend)
  • Training Load (total training load for last seven days calculated from estimated EPOC)
  • Training Effect (aerobic)
  • Training Effect (anaerobic)
  • Customizable 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:
  • HR zones
  • HR alerts
  • HR calories
  • % HR max
  • % HRR
  • Recovery time
  • Auto max HR
  • HR broadcast (broadcasts HR data over ANT+ to paired devices)
  • Preloaded running, treadmill running, indoor track
  • GPS-based distance, time and pace
  • Running dynamics with compatible accessory
  • Cadence (provides real-time number of steps per minute)
  • Performance condition (after running 6 - 20 minutes, compares real-time condition to your average fitness level)
  • Run workouts
  • Race predictor
  • Foot pod capable
Outdoor recreation:
  • Preloaded skiing, snowboarding, XC skiing, SUP, 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
  • Preloaded 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): ANT+ and Bluetooth Smart
  • Preloaded  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® Music
  • Charging cable
  • Documentation
More »
Garmin International Inc® designs, manufactures, and markets navigation and communications equipment for the aviation, marine, automotive, and general recreation industries. What started in 1989, by a handful of dedicated engineers with a great idea for a product, has grown into a world-wide leading Global Positioning System (GPS) provider - both in sales and critical acclaim.

From the time its first GPS handhelds supported the Coalition forces in the Gulf War to its current reputation as a leading name in GPS innovation, Garmin has helped to take GPS to new heights by striving to go beyond the ordinary and offer exceptional performance not found in basic GPS receivers.

Today, Garmin has a diverse product line, distributors in virtually every part of the world, and has sold millions of GPS receivers. The company recognizes that its long-term success is based on its commitment to support its customers after the sale and is constantly aiming to win over our new customers with its guiding principles of innovation, convenience, performance, value and service.

Garmin — we'll take you there
Description Analog or digital Features Date window Price  

010-01863-20 - Black

More Info

Product Details

Garmin Forerunner 645 Music GPS Running Watch
010-01863-20 - Black

SKU #:
UPC #:
Analog or digital:
Multi-sport, heart rate
Date window:
Digital display
To 50 meters
Watch band material:
Heart rate display:
Digital Multi-sport, heart rate Digital display $449.99

010-01863-31 - Cerise

More Info

Product Details

Garmin Forerunner 645 Music GPS Running Watch
010-01863-31 - Cerise

SKU #:
UPC #:
Analog or digital:
Multi-sport, heart rate
Date window:
Digital display
To 50 meters
Watch band material:
Heart rate display:
Digital Multi-sport, heart rate Digital display $449.99