Garmin Forerunner 45S

Black 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.

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 - The watch constantly samples your heart rate1and will alert you if it stays too high or too low while you're at rest. It also helps gauge how hard you work during activities.

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.