A RUNNING WATCH THAT WON’T WEIGH YOU DOWN
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.
Monitors heart rate at the wrist1, because a finger on the pulse is so old school.
Log more miles between charges with up to 7 days of battery life.
For concrete proof that you crushed it, GPS tracks pace, distance, intervals and more.
Get yourself on the road to glory with free Garmin Coach adaptive training plans.
Say goodbye to missed texts with smart notifications2 delivered right to your wrist.
We’ve got your back with built-in incident detection and assistance features3.
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.
DESIGNED FOR RUNNERS
Run far with a smaller-sized lightweight watch that fits comfortably and won’t hold you back.
LIGHT AND SPORTY MATERIALS
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.
BUILT-IN SPORTS APPS
Switch up your workout routine with activity profiles for cycling, treadmill running, indoor track, elliptical, cardio, yoga and more.
WRIST-BASED HEART RATE
Get heart rate data1 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.
BODY BATTERY™ ENERGY MONITOR
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.
Receive emails, texts and alerts right on your watch when paired with a compatible smartphone.
SAFETY AND TRACKING FEATURES
If you feel unsafe or if your watch senses that an incident occurred, assistance and incident detection features3 send your location to emergency contacts. Incident detection is enabled by default for select activity profiles only.
CONNECT IQ™ STORE
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.
SYNCS WITH GARMIN CONNECT™
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.
Physical & Performance
|1.04" (26.3 mm) diameter
|208 x 208 pixels
Small: 32 g
|sunlight-visible, transflective memory-in-pixel (MIP)
|Smartwatch Mode: Up to 7 days
GPS mode: Up to 13 hours
Maps & Navigation
|80 hours of activity data