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 to your heart’s content with up to 7 days of battery life in smartwatch mode and up to 13 hours in GPS mode.
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 too high or too low while you’re at rest. Gauge how hard your heart is working during activities, even underwater.
Track where you run, and get accurate stats, including distance, pace and intervals.
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, intensity minutes and more.