Garmin Forerunner 45SGPS Running Watch (39mm, Black)

Model: 010-02156-02

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Splash Proof Yes
Water Resistance Depth 5 ATM (Pressure Equivalent to 164.04' / 50 m)
Material Silicone


Sensors Accelerometer, Optical Heart Rate
OS Compatibility Android


Memory Retention 200 Hours (Activity Data)


Weight 1.13 oz / 32 g
Dimensions 1.56 x 1.56 x 0.45" / 39.5 x 39.5 x 11.4 mm


Display Type MIP LCD
Watch Crystal Material Chemically Strengthened Glass
Display Size 1.04" / 26.4 mm
Pixel Density 283 ppi
Screen Resolution 240 x 240


Global Positioning GPS, GLONASS, Galileo
Wireless Connectivity ANT+


Estimated Battery Life 7 Days (Smartwatch Mode)
13 Hours (GPS On)


Band Circumference 4.9 to 7.3" / 124 to 185 mm
Band Material Silicone
Expert Reviews
Expertreviews co uk.33706088
7 days ago

: Beginner runners and bargain hunters need look no further than this impressively full-featured watch

  • +

    Accurate GPS and heart-rate tracking, Garmin Coach compatibility, Supports ANT+ sensors

  • -

    No swim tracking, Lacks music playback and NFC, Doesn't support Bluetooth sensors

Pc magazine uk.35148076
11 October 2019

The Garmin Forerunner 45 watch updates its predecessor with a new look and a color display, but remains a solid fitness tracker for runners and anyone else who wants to track their workouts.

  • +

    Accurate step count and heart rate readings in testing., Long battery life., Comfortable.

  • -

    No third-party app support., Distance tracking can be better.

Techradar uk.32817471
9 July 2019

Bang for buck, the Garmin Forerunner 45 is one of the most impressive running watches out there right now. You’ll be hard-pressed to find a more comprehensive device for this price. Yes, it has gaps and compromises, but it also sets the standard for features we now expect in our lower end watches.

  • +

    Lightweight, Good value, Music controls

  • -

    Limited sport profiles, Plastic-heavy build, No real swim tracking

User Reviews
10 May 2020

Overall not as easy to navigate as my previous Garmin. Color is Moor more blue than the lavender in the photo. It's a nice watch, but will take some getting used to

  • +

    Heartrate monitor

  • -

    Same button does many functions

2 January 2020

I purchased the smaller 45S by mistake, but have not been disappointed in it's performance. It is a tight fit around a larger wrist, but the 45S is more stylish because of it size than the 45.

5 March 2020

I bought this last week still trying to figure everything out but I love this.

5 days ago

I took a while in deciding which smartwatch was right for me, and I'm very happy with my decision. The GPS takes a little longer to lock on than phone but is much more accurate than my phone. Already helping me improve my times.

2 weeks ago

Purchased for my son's birthday- and he loves it. GPS features make for easy capturing of bike rides, and the amount of functions it has for the amount it costs is great.

3 weeks ago

Nice watch does everthing that i needed it to do. Only minus overcharged by £10 for some reason tried to sort out online but no way of doing it and waiting on the phone took ages and gave up. Otherwise its a nice watch .

10 June 2020

Excellent watch does exactly what I need it to and more!

3 June 2020

Great running watch - i don't use a lot of the data, but it's useful to have. I'm wearing it all day, and find the move reminder really handy for getting me to move. GPS is great, as is the HR monitor. Adaptive step goal is useful, as some weeks I'm able to get out less than others.

3 June 2020

Nice looking watch has lots of features. Connects easily to iPhone. My only gripe would be that it occasionally loses connection with my phone and then I struggle to get it reconnected but other than that it’s fab

3 June 2020

A brilliant piece of kit for beginners. East to set up and follow and looks great too

Product Highlights
  • Track Runs with Built-In GPS
  • 24/7 Heart Rate Monitoring
  • Record Distance, Pace, and Intervals
  • Up to 7-Day Battery Life in Watch Mode
  • Up to 13-Hour Battery Life in GPS Mode
  • Sleep and Stress Monitoring
  • Garmin Connect and Garmin Coach
  • Incident Detection and Remote Assistance
  • Receive Text and Call Alerts
  • Profiles for Cycling, Cardio, and More
Average Expert Score
Average User Score
In The Box
  • Garmin Forerunner 45SGPS Running Watch (39mm, Black)
  • Charging Cable
  • Limited 1-Year Warranty
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