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You’re a Runner, so Train Like One
Forerunner 45 is the 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 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.
Put your running performance first.
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.
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.
Keep tabs on wellness.
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 45 tracks steps, intensity minutes, and more.
Wherever you go, stay connected.
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.
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.
chemically strengthened glass
42 x 42 x 11.4 mm
Fits wrists with a circumference of 129-197 mm
|Display size||1.04" (26.3 mm) diameter|
|Display resolution||208 x 208 pixels|
|Display type||sunlight-visible, transflective memory-in-pixel (MIP)|
Small: 32 g
|Battery life||Smartwatch Mode: Up to 7 days
GPS mode: Up to 13 hours
|Water rating||5 ATM|
|Memory/History||80 hours of activity data|
|GPS Time Sync||✓|
|Automatic daylight saving time||✓|
|Wrist-based Heart Rate (constant, every second)||✓|
|Daily Resting Heart Rate||✓|
|Abnormal Heart Rate Alerts||yes (high and low)|
|Fitness Age||yes (in app)|
|Body Battery™ Energy Monitor||✓|
|Relaxation breathing timer||✓|
|Garmin Elevate™ wrist heart rate monitor||✓|
Daily Smart Features
|Connect IQ™ (downloadable watch faces, data fields, widgets, and apps)||yes (watch faces only)|
|Controls smartphone music||✓|
|Find My Phone||✓|
|Find My Watch||✓|
|Smartphone compatibility||iPhone®, Android™|
|Pairs with Garmin Connect™ Mobile||✓|
Safety and Tracking Features
|Live Event Sharing||Android™ Only|
|Incident Detection during select activities||yes (Smartphone Required)|
|Assistance||yes (Smartphone Required)|
Activity Tracking Features
|Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)||✓|
|Auto goal (learns your activity level and assigns a daily step goal)||✓|
Gym & Fitness Equipment
|Available gym activity profiles||Cardio and Elliptical Training, Stair Stepping, Yoga may be added through the app|
Training, Planning and Analysis Features
|HR Broadcast (broadcasts HR data over ANT+™ to paired devices)||✓|
|GPS speed and distance||✓|
|Customizable data pages||✓|
|Customizable activity profiles||✓|
|Downloadable training plans||✓|
|VO2 Max (Run)||✓|
|Touch and/or button lock||✓|
|Activity history on the watch||✓|
|Available run profiles||
Running, Treadmill Running. Indoor Track Running may be added through the app
|GPS-based distance, time, and pace||✓|
|Cadence (provides a real-time number of steps per minute)||✓|
|Foot pod capable||✓|
|Alerts (triggers an alarm when you reach goals including time, distance, heart rate, or calories)||✓|
|Available cycling profiles||
Biking. Indoor Biking may be added through the app
|Speed and cadence sensor support (w/sensor)||✓|
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