You have no items in your shopping cart
Forerunner 45S is the smaller-sized GPS running watch with all the running-related features you need in a sleek, lightweight smartwatch you’ll want to wear all day and night.
Run far with a smaller-sized lightweight watch that fits comfortably and won’t hold you back.
The sweat-ready silicone band makes chafing a thing of the past.
These adaptive training plans feature guidance from expert coaches and free training plans that adapt to you and your goals. Workouts sync right to your watch.
Switch up your workout routine with activity profiles for cycling, treadmill running, indoor track, elliptical, cardio, yoga and more.
Get heart rate data along with alerts if your heart rate stays high while you’re at rest. Even gauge how hard your heart is working during activities.
Track where you run, and get accurate stats, including distance, pace and intervals.
Run to your heart’s content with up to 7 days of battery life in smartwatch mode and up to 13 hours in GPS mode.
Find out if you’re having a calm, balanced or stressful day. Relax reminders will even prompt you to do a short breathing activity.
Track your body’s energy levels so you can find the best times for activity and rest.
While you’re out and about, Forerunner 45S tracks steps, floors climbed, intensity minutes and more.
Receive emails, texts and alerts right on your watch when paired with a compatible smartphone.
If you feel unsafe or if your watch senses that an incident occurred, assistance and incident detection features send your location to emergency contacts.
Download custom watch faces, add data fields, and get apps and widgets from the Connect IQ Store.
Easily control the music playing on your phone, so you can skip songs without missing a beat.
Upload your activities to the Garmin Connect app to interact with a thriving online community where people on the go can connect and compete — and even share their triumphs via social media.