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.
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 notifications delivered right to your wrist.
We’ve got your back with built-in incident detection and assistance features.
Log more miles between charges with up to 7 days of battery life.
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.
GARMIN COACH
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.
BUILT-IN GPS
Track where you run, and get accurate stats, including distance, pace, and intervals.
BATTERY LIFE
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.
STRESS TRACKING
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.
FITNESS TRACKING
While you’re out and about, Forerunner 45S tracks steps, floors climbed, intensity minutes, and more.
LENS MATERIAL
chemically strengthened glass
STRAP MATERIAL
silicone
PHYSICAL SIZE
39.5 x 39.5 x 11.4 mm
Fits wrists with a circumference of 124-185 mm
COLOR DISPLAY
DISPLAY SIZE 1.04 in (26.3 mm) diameter
DISPLAY RESOLUTION 208 x 208 pixels
DISPLAY TYPE sunlight-visible, transflective memory-in-pixel (MIP)
BATTERY LIFE Smartwatch Mode: Up to 7 days
GPS mode: Up to 13 hours
WATER RATING 5 ATM
MEMORY/HISTORY 200 hours of activity data
