Garmin Forerunner 45S

39.50 mm, Plastic, One size
Price includes VAT, free shipping


GPS running clock with Garmin Coach training plans for the perfect start This GPS watch has everything you need to get fitter. Functions like pace, distance or lap times motivate you to get better and better. Based on the heart rate measurement on your wrist, you can always keep an eye on your fitness. Your Garmin even knows if your body is ready for the next workout or should be regenerating. Personal training plans and a running coach will also help you achieve your goals. A variety of additional functions (daily step count, distance, calorie consumption, stress level tracking and even sleep data recording) will help you get better and fitter every day in the outdoors and indoors.

The Forerunner 45 is a GPS running watch that combines all the necessary running functions in a handsome, lightweight Smartwatch that you want to wear day and night. With a battery life of up to 7 days in Smartwatch mode and a powerful 13 hours in activated GPS mode, you're ready for action anytime.

This user-friendly running watch is perfect for daily running sessions, training sessions or even for the upcoming 10 km run that you have been persuaded to do. The built-in GPS records where you run and provides accurate statistics on distance, pace, intervals and more. The intuitive operation is via keys and deliberately not via a touch screen. Even if your hands are a little sweaty, you can still easily mark a lap or stop the timer. Forerunner 45 also measures your wrist heart rate day and night.

The Forerunner 45 is compatible with adaptive Garmin Coach training plans (see link in product details). These provide guidance from experienced coaches and free training plans, and can even provide a competition forecast. So you're sure to reach the finish line, whether you're a beginner or a pro.

Security and tracking features allow you to easily share your position with selected contacts when you need help. This can be done manually or automatically with built-in accident detection if the watch is paired with a compatible smartphone (Android 4.4 or higher or iOS 10.0). Various Smartwatch functions (Smart Notifications, music control (e.g. skip title), calls, SMS etc.) enable you to stay in touch with the rest of the world not only during, but also between training sessions.

You are sporty in several disciplines? In addition to running, the Forerunner 45 comes pre-installed with profiles for cycling, indoor track, treadmill, yoga, cardio, crosstrainer and many more. The Body Battery function collects data that calculates your body's energy reserves. This tells you if you're ready for your next workout.

When you sync your activities with Garmin Connect, you're not just storing your information. Garmin Connect is a popular online community. Members can connect with others and challenge, inspire and motivate each other. Share your achievements with your friends through social media. Garmin Connect is free and available on the web or on your smartphone.

Customize your Forerunner 45 to give it your own personal touch. The GPS clock is compatible with free display designs from our Connect IQ Store. Download one of thousands of available display designs or create a custom display design from your own photos.

Key specifications

Watch type
Sports watch
Main functions
Alarm clock, Automatic summertime, Calorie consumption measurement, Datebooks, Heart rate monitoring, Pedometers, Sleep recording, Smart notifications, Stopwatch, Timer
Outdoor + Leisure functionalities
Cycling, Fitness functions, Intensity minutes, Running
Operating system
Operating system compatibility
Android, iOS
Case colour
Wristband colour
Item number

100-day right of return

The statutory right of revocation applies for the first 14 days. Additionally, Galaxus offers an optional right of return until day 100 from the date of receipt. Please note our Return policy

24 Months Statutory warranty

You can send us the defective product. We will cover the shipping costs.
Please note our Guarantee provisions

Statutory warranty score

How often does a product of this brand in the «Sports watches + Smartwatches» category have a defect within the first 24 months?

Source: Galaxus
  • 8.Google
  • 8.Polar
  • 10.Garmin
  • 11.Accutime
  • 12.Brandunit

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • 14.Huawei
  • 14.TCL
  • 16.Garmin
  • 17.Coros
  • 18.Apple
Source: Galaxus

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