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Garmin Forerunner 645 Music Running GPS Watch

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  • Garmin Forerunner 645 Music: GPS Running Watch with Music and More Video
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Pick up the pace with the Garmin Forerunner 645 Music Running GPS Watch which tracks every element of your run while keeping you going, storing up to 500 songs, and featuring contactless payments.

Pick up the pace with the Garmin Forerunner 645 Music Running GPS Watch which tracks every element of your run while keeping you going, storing up to 500 songs, and featuring contactless payments.

Top Features:

  • Activity profiles for running, cycling, swimming and more.
  • Stores and plays up to 500 songs. Plus 200 hours of activity data.
  • Watch size 42.5 x 42.5 x 13.5mm. Display size 30.4mm diameter.
  • 240 x 240 pixel display.
  • Up to 7 days of battery life in smartwatch mode. Up to 14 hours in GPS mode. Up to 5 hours mode in GPS mode with music.
  • Corning® Gorilla® Glass 3 watch face.
  • Waterproof to 5 ATM.
  • Compatible with iPhone® and Android™.
  • Smart features include connect IQ™, calendar, weather, control music, find my watch and find my phone.

Product Data

  • Bluetooth Enabled: Yes
  • GPS: Yes
  • Ant+ Compatible: Yes
  • Strava Compatible: Yes
  • Strava Live Segments: Yes
  • Smart Phone Notifications: Yes
  • Rechargable: Yes
  • Charging Method: USB
  • Commuter: Yes
  • Touring: Yes
  • Cyclocross: Yes
  • Time Trial: Yes
  • Road: Yes
  • MTB: Yes

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Description

Music Player

Music is one of the greatest motivators in any form of workout. The Forerunner 645 therefore helps streamline your devices further and includes a system that will let you store and play up to 500 songs via connecting the watch to a pair of Bluetooth wireless headphones. You can then use the watch to control your music while you’re on the move.

Heart Rate Monitor

The Forerunner 645 comes with a heart rate monitor fully integrated into the watches wrist at the back of the watch face. This is much more practical than using chest or shoulder strap with additional sensors. The Forerunner instead allows you to see your heart rate in real time all day, every day. Your heart will give you key information into your training – allowing you to ascertain whether your current training is effective, or if you’re not pushing it hard enough, or you’re overreaching.

Performance Monitoring

The watch uses GPS to provide highly accurate monitoring of all your activity. The device comes with Training Status which is a new performance indicator that automatically evaluates your recent exercise history which will let you know if your training is productive, peaking or overreaching. The Training Load mode will take this one step further in evaluating your exercise volume from the last 7 days.

Connectivity

Using Bluetooth Smart of Ant+ you can easily connect the Forerunner 645 to your smartphone or tablet device. This allows you to access the Garmin Connect mobile app which will help you keep track of your activity over days, weeks, months and years so that you can see your progress over time and really get your teeth into the details. The app also lets you make use of Garmin’s online community of other activity track users. Once connected you can also receive your smartphone’s notifications to your watch screen including text messages, call alerts, social media notifications and more.

Garmin Pay

The Forerunner 645 comes with Garmin’s new Garmin Pay which allows you to make card payments via the watch using contactless. This makes your running trip even easier – you no longer have to carry your phone, or wallet which streamlines your running kit making your running experience easier than ever.

Specifications

General
Lens Material: Corning Gorilla Glass 3
Bezel Material: Stainless steel
Strap Material: Silicone
Physical Dimensions: 42.5mm x 42.5mm x 13.5mm
Wrist Fit: 127-204mm
Colour Display
Display Size: 1.2’’ (30.4mm) diameter
Display Resolution: 240 x 240 pixels
Display Type: Sunlight-visible, transflective memory-in-pixel (MIP)
Weight: 42.2g
Battery Life: 7 days (Smartwatch Mode), 14 hours (GPS Mode without Music), 5 hours (GPS Mode with Music)
Water Rating: 5ATM
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
Galileo
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
Plays and Controls Watch Music
Music Storage (up to 500 songs)
Find My Phone
Find My Watch
VIRB Camera Remote
Smartphone Compatibility (iPhone and Android)
Compatible with Garmin Connect Mobile
Garmin Pay

Safety and Tracking Features
LiveTrack
Incidence Detection During Select Activities (Smartphone Required)

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 Travelled
Intensity Minutes
TrueUp
Move IQ
Fitness Age (in App)
All-Day Stress Tracking

Fitness Equipment/Gym
Available 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
VO2 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
Garmin Live Segments
Strava Live Segments
Touch and/or Button Lock
Auto Scroll
Activity History on Watch
Physio TrueUp

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
Available Run Profiles: Running, Treadmill Running, Indoor Track, Trail Running.
GPS-Based Distance, Time and Pace
Running Dynamics – when used with a compatible sensor (not included)
Vertical Oscillation and Ratio (The degree of ‘bounce’ in your running motion and the cost-benefit ratio with stride length) – when used with a compatible sensor (not included)
Ground Contact Time and Balance (Shows how much time, in the running motion, your foot is on the ground rather than in flight and lets you check your running symmetry) – when used with a compatible sensor (not included)
Stride Length (Real time) – when used with a compatible sensor (not included)
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 Pad Capable

Outdoor Recreation Features
Available Outdoor Recreation Profiles: Skiing, Snowboarding, XC Skiing, Stand Up Paddleboarding, Rowing
Point-to-Point Navigation
Breadcrumb Trail in Real Time
Back to Start
TrackBack
UltraTrac Mode
Elevation Profile
Distance to Destination
Vertical Speed
Total Ascent/Descent
GPS Coordinates

Cycling Features
Alerts (Triggers alarm when you reach your goals including time, distance, heart rate or calories)
Courses
Available Cycling Profiles: Biking, Indoor Biking
Race an Activity
Compatible with Varia Vision (Head-mounted display)
Compatible with Varia Radar (rear-facing radar)
Compatible with Varia Lights

Swimming Features
Available Swim Profiles: Pool swimming
Pool Swim Metrics (Lengths, distance pace, stroke count, swim efficiency (SWOLF), calories)
Stroke Type Detection (Freestyle, backstroke, breathstroke, butterfly) (Pool swim only)
Drill Logging (Pool swim only)
Basic Rest Timer (Up from 0) (Pool swim only)
‘Repeat On’ Rest Time
Countdown Start
Pool Swim Workouts

In the Box 

Forerunner 645
Charging Cable
Documentation

Compatibility

Adapters
AC Adapter Cable, Europe

Batteries
Garmin Charge Power Pack

Bands
Quick Release Band

Cases and Covers
Carrying Case

Heart Rate Monitors
HRM-Dual
HRM-Run

Cycling Accessories
Wristwatch Bike/Trolley Mount
Bike Cadence Sensor Bands

Sensors
Running Dynamics Pod
Tempe
Speed Sensor 2
Cadence Sensor 2
Bike Speed Sensor 2 and Cadence Sensor 2 Bundle 

Read More

Returns

We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.

Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.

Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.
More information on Wiggle's return policy

Customer Reviews

Garmin Forerunner 645 Music Running GPS Watch is rated 4.7 out of 5 by 42.
Rated 5 out of 5 by babs74 from Great watch Bought this watch a couple of months ago to update my garmin vivosport. I absolutely love it. It provides plenty of data, is easy to operate with the buttons rather than a bezel or a touchscreen and it looks good as a watch. It was good value as I bought it at a reduced price.
Date published: 2021-02-08
Rated 5 out of 5 by David2455 from Excellent Product I've used this device for 12ish months now and remain highly impressed. I use it for running and run approx 4 times per week and listen to 'beat' music, on the device, using Spotify and my Apple ear buds. The product does exactly as expected and is very reliable providing the music and tracking my runs and heart-rate via the Garmin Connect app. The device has a lot included, so takes a bit of working out, but anyone below 60 (like me), should possess the necessary skills. Added a Breitling watch face for when I'm not running with it too! It works ok on the bike, but I have another, non music device for that. Only swam once....locked down!!
Date published: 2021-01-19
Rated 5 out of 5 by Ronnie74 from Perfect for my run and fitness needs Great for my runs, biking and weight Training. Love the music feature which works perfect with Spotify. Some of the performance features are actually bringing my training to another level. If I had to gripe about anything, sometimes my earphone connection drops out but that could be the earphones. Great price at Wiggle.
Date published: 2021-01-09
Rated 4 out of 5 by iR11 from It's just what I need for now I was actually thinking to go right away with FR945 but then for the half price of it I saw this FR645 which I considered to have what I need for now. After reading so many comparison reviews of this watch with FR245 and FR945 I decided to give this watch a try. After using my FR235 for four years of course it is a jump in many functions with this watch. I have used this watch for various activities and I am satisfied so far. The only thing that I miss is the standard triathlon apps and I am not sure that we can use this watch for a 70,3 IM. The battery use is not really as I thought it would be. I do not have details about the battery usage but I will do some internet research how to maximize this. Running with music is also using double capacity of battery which is logical I would say. But all and all I am happy with it for now, and the size fits my small arm perfectly!
Date published: 2020-12-20
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Q & A

music

Can I put songs from my iTunes library onto this watch?
Asked by: FlexBigguns
This will be suitable, you can export up to 500 songs to the watch.
Answered by: WiggleKris
Date published: 2020-07-25

Tracking

What activities will this watch actually track? ie running, swimming, cycling??? What else?
Asked by: FlexBigguns
This will track running, swimming and cycling. For further details please contact us here; http://www.wiggle.co.uk/ContactUsForm Hope this helps!
Answered by: WiggleSamB
Date published: 2019-08-31

garmin pay

Is the Garmin pay system working? can I add my card details to it and use it like a contact-less payment system??
Asked by: FlexBigguns
You can find more information regarding this at Garmins own site: https://www.garmin.com/en-GB/garminpay/banks/
Answered by: WiggleJarrett
Date published: 2018-04-22

Can I buy it without music thanks

As above
Asked by: Bmfbtr
Yes, just get the Forerunner 645.
Answered by: Clare77
Date published: 2020-08-02

Can I use my H10 polar HR strap with a garmin watch via bluetooth?

Might be a stupid question, but you never know....
Asked by: Onion0
While not stated as being compatible the HR strap features Bluetooth and ANT+ which should connect to the Garmin Forerunner.
Answered by: WiggleJC
Date published: 2019-10-29

Golf.

Can this watch be used for golf. If so does it give you yardage and are you able to input your score? Thanks.
Asked by: PDiddy590
This watch is not for Golf. The detailed product description can be found here. https://buy.garmin.com/en-GB/GB/p/612476#specs
Answered by: WiggleRickL
Date published: 2019-04-10

Different colours are different price, are they different in features?

Asked by: Peechy28
All the different colours of the Garmin Forerunner 645 Music Running GPS Watch have the same functions.
Answered by: WiggleMitch
Date published: 2020-07-03
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Privacy Policy | Cookie Policy | Terms & conditions

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Wiggle Ltd. 1000 Lakeside, Suite 310, Third Floor N E Wing, Portsmouth, Hampshire, PO6 3EN, United Kingdom

VAT No: GB 884 2571 94 | Company No: 02667809

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