We use cookies to allow us and selected partners to improve your experience and our advertising. By continuing to browse you consent to our use of cookies. You can understand more and change your cookies preferences here.

Garmin Forerunner 645 Music review

£189.99 View retailers

Test scoreShow Context

Key features

    The Garmin 645 Music is a GPS smartwatch aimed at those who want to track their fitness activities. You can store up to 500 songs on this device, which may be music to the ears of those who like a beat while running. Is it enough to make this expensive smartwatch worth snapping up? We challenged it in on the treadmill, on a woodland run and in the pool. We reveal all in our full review.

    Included in our expert review
    • Pros and cons
    • What is it?
    • What can it do?
    • What's the setup like?
    • What's it like to wear and use?
    • How accurate is it?
    • Is there anything else I should know?
    • Should I buy it?
    First month only £5, then £9.99 per month, cancel any time

    First reviewed by Which?

    December 2019

    Technical specifications

    General

    Test results

    The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

    Find out how we test smartwatches>
    First month only £5, then £9.99 per month, cancel any time

    Put us to the test

    Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

    Compare retailers

    Prices updated daily

    Prices are ordered from lowest to highest, irrespective of retailer rating or stock, and exclude any potential delivery costs. We are not able to show every possible retailer and cheaper prices may be available. When you click on a retailer link on our site, we may earn affiliate commission. This supports our not-for-profit mission to empower consumers and in no way affects our recommendations. Find out more.

    Make smarter choices

    We have tested 86 smartwatches and found that there are 0 Don't Buys and 16 Best Buys.
    Range of Smartwatch scores
    1. 57%
      Lowest score
    2. 71%
      Average score
    3. 83%
      Highest score
    We'll show you where this model sits on the scale so that you can see how it compares to smartwatches we've tested
    First month only £5, then £9.99 per month, cancel any time

    Put us to the test

    Our Test Labs compare features and prices on a range of products. Try Which? to unlock our reviews. You'll instantly be able to compare our test scores, so you can make sure you don't get stuck with a Don't Buy.

      CompareRemove all products