garmin forerunner 645 music review

Garmin Forerunner 645 Music Review – GPS Running Watch with Music Storage

Watch Review: Forerunner 645

Editors Rating:

GPS Features

Watch Design

Ease of Use



  • Ability to store up to 500 songs
  • Compact, modern and lightweight design
  • Built-in heart rate monitor with advanced features
  • Multisport tracking including running, indoor swimming, snowboarding, cycling and many more


  • Expensive purchase
  • Still in the early stages of development – not compatible with Spotify, Pandora or Apple Music
  • Unable to track open-water swimming
  • Limited battery life when listening to music, using heart rate monitor or GPS
  • Garmin pay ready contactless is still limited to participating banks only

Garmin Forerunner 645 Review Summary

A step up from other running watches currently available on the market, the Garmin Forerunner 645 Music (Amazon) takes monitoring your performance to a whole new level. Strides ahead, this GPS running watch features all the advanced sports training and performance tools that now come as standard from Garmin and combines them with a host of smart features. These include contactless payments and integrated music, so you can leave your phone at home and head out into the wilderness with everything you could possible need on hand.

Garmin Forerunner 645 Music GPS Running Watch Review

Who should buy the Garmin Forerunner 645 Music?

This watch is perfect for those style conscious early adopters, who have money to spend on the latest fitness gadget. It is the ideal upgrade from previous Garmin Forerunners (630 and 620) and is the perfect training buddy to assist you across a variety of sporting activities. For those who like to dissect data, the tracking tools are second to none and the built-in heart rate monitor and GPS, ensure that body and mind are kept well on track. For those who want to analyse their training, li

Garmin Forerunner 645 Music tech specs:

  • Garmin Pay Ready contactless payment
  • Integrated music storage for up to 500 songs
  • Advanced running metrics such as stride length, ground contact time and balance and rhythm, pace and tempo.
  • Training and recovery performance status
  • Latest Garmin Connect IQ for free apps, widgets and watch faces
  • Built-in heart rate monitor
  • Lightweight watch with quick release bands
  • Ability to receive and respond to text messages, social media updates and emails
  • Let friends Livetrack your run
  • Built-in activity profiles for running, cycling, indoor swimming, paddle sports, strength training, skiing, snowboarding and more
  • Battery life of up to 5 days in smartwatch mode and 14 hours in GPS mode

review of the garmin forerunner 645 music watch

Contactless payments

For when you are on the run, the Garmin Forerunners 645 Music has a tap and go contactless payment solution, to ensure that you keep on moving. And, with the list of participating banks gradually increasing, you’ll soon be able to leave your phone and bank cards at home with this watch on your wrist when you step out to do some serious training.

Train to the beat

Studies have found that music reduces your perception of how hard you are training, increases concentration, provides motivation and generally leaves you feeling upbeat. With the Garmin Forerunner 645 Music, you now have the freedom to enjoy all your favourite tunes without having to take your ipod or phone. Its integrated music storage can hold up to 500 songs, which can be downloaded offline from apps such as iHeartRadio and Deezer - however please note that Spotify, Apple and Pandora are not yet supported.

garmin forerunner 645 music

Editors rating:

garmin forerunner 935

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645 Music




Wi-Fi connectivity

Smartphone notifications

Training Load

Wrist heart rate

Garmin Pay

Music Storage

Open Water Swim

Power Meter Compatible





Track your training

If you think you are on track to be the next Carl Lewis, Lance Armstrong or Michael Phelps, the Garmin Forerunner 645 Music can measure your training and analyse your performance and recovery. Helping you to get in tip top condition, its new monitoring tools can automatically evaluate your exercise history and let you know how efficiently you are training, inform you when you’ve improved and push you to your physical limits.

Its biochemical metrics can measure stride length, ground contact time, balance, rhythm, stroke count, distance, pace, tempo and more across a number of sports such as running, cycling, indoor swimming, skiing and even snowboarding!​

Be different

If you want to stand out from the crowd there is no better watch than the Garmin Forerunner 645 Music. Its sleek looking design takes it away from other sportier watches, making it wearable for everyday use. And when you want to inject a little personality, you can download some apps, widgets, watch faces and photos or try out a different interchangeable band. The chroma screen is easy to read and navigate using physical buttons - perfect if you are all fingers and thumbs or training hard in the pool.

Plethora of free apps available

“Fairweather” runners can take advantage of the AccuWatherMinuteCast app, early morning risers can bubble up the coffee pot for when they get in with the Samsung SmartThings app and for those who easily lose track of time, the Uber app can assist in getting you from place to place.​

Stay Connected

There is no better antidote to the stresses and strains of modern day life than exercise, but regular running and other sports can take valuable time out of the day. So for those times when we still need to keep up with our busy lifestyles and stay connected, the Garmin Forerunner 645 Music has built in smart features, and once paired with a compatible smartphone, can allow you to view and respond to emails, text messages and social network notifications. Other nifty features include helping you find your phone and letting your friends keeps tabs on your runs.

In it together

Whether you want to give yourself something to aim for or need some added motivation, with the Garmin Forerunner 645 Music, you can download the Garmin Connect app and share your successes with others via social media. This watch can even allow you to review your past efforts and share them with family and friends.

Battery life

The Garmin Forerunner 645 Music has been marketed with a battery life of five days, which sounds mighty impressive for a lightweight watch packed full of features. However, if you are a long-distance runner who uses GPS navigation and enjoys striding to the beat, then these functions will seriously drain your battery to around just 5 hours. Use just the GPS and you can eek this out to around 12-14 hours a day.

Comparison to the competition

The Apple watch Series 3 is probably the most comparable to the Garmin Forerunner 645 Music, based on the fact they both combine music functions and running features. In terms of price they are both equally matched and considered a premium purchase. What the Apple lacks in benefits, it more than makes up for with its consistent performance whereas the Garmin Forerunner 645 Music is still in its infancy and therefore prone to a few technical hiccups.

The main advantages that the Garmin Forerunner 645 Music has over the Apple Series 3 watch are the number of data transfer options available. The Apple watch can only download data via Bluetooth, whereas the Garmin Forerunner 645 Music uses Bluetooth, USB and Wifi. The battery life is also longer with Garmin.

In terms of training functions, the Garmin Forerunner 645 Music outruns Apple thanks to its advanced features such as the race predictor and recovery adviser. However, if you are more of a swimmer than a runner, then the Apple Series 3 may be more suitable as it can be used for open water training as well as recording your underwater heart rate.​

When it comes to GPS, Garmin wins hands down – but then you wouldn’t expect anything less from a company that prides itself on its satellite navigation products.​

Compatible accessories

A range of compatible accessories are available for the Forerunner 645, these include:

garmin running dynamics pod

Running Dyamics Pod

screen protector

Screen Protector

garmin forerunner 35

HRM-Run / HRM-Tri / HRM-Swim

garmin forerunner 645 music - quick -release bands

Quick Release Bands (20mm)

Bottom line

The Garmin Forerunner 645 Music is an advanced running watch, so if you are serious about your sport then this is the going to be the watch for you. It looks stylish (not to mention expensive) and the fact that you can work out to music phone-free is its winning combination. For the latest price, check Amazon here.

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