Physical dimensions 1.75" x 1.75" x 0.47" (44.5 x 44.5 x 11.9 mm)
Display size, WxH 1.23" (31.1 mm) diameter
Display resolution, WxH 215 x 180 pixels
Color display
Weight
1.4 oz (40.2 g)

Battery Rechargeable lithium-ion
Battery life Up to 24 hours in UltraTrac mode without optical HR; up to 14 hours in activity mode with GPS and optical HR; up to 11 days in watch mode, including activity tracking, smart notifications and optical HR tracking
Water rating 5 ATM
GPS-enabled
GLONASS
High-sensitivity receiver
Smart notifications (displays email, text and other alerts when paired with your compatible phone)
Vibration alert
Music control
Find my phone
VIRB® control
Watch functions Includes date and alarmMaps&Memory
History 80 hours of activity dataRunning Features
V02 max estimate
Recovery advisor
Race predictor
Running dynamics
Accelerometer (calculates distance for indoor workouts, without need for a foot pod)
Personal records Cycling Features
Compatible with Vector™
Bike speed/cadence sensor (optional)Performance Features
Heart rate monitor (wrist-based)
Foot pod (optional)
Virtual Partner® (train against a digital person)
Virtual Racer™ (compete against other activities)
Courses (compete against previous activities)
Auto Pause® (pauses and resumes timer based on speed)
Auto Lap® (automatically starts a new lap)
Auto Scroll (cycles through data pages during workout)
Multi-sport
Auto multisport (switch sport modes with 1 button press)
Advanced workouts (create custom, goal-oriented workouts)
Pace alert (triggers alarm if you vary from preset pace)
Time/distance alert (triggers alarm when you reach goal)
Interval training (set up exercise and rest intervals)
Heart rate-based calorie computation
Calculates calories burned
Training Effect (measures impact of an activity on your aerobic fitness)
Customizable screen(s)
Power meter compatible (displays power data from compatible 3rd party ANT+™-enabled power meters)
Shock Resistant Swimming Features
Pool swim metrics (lengths, distance, pace, stroke count/rate, calories)
Stroke type identification (e.g. freestyle)
Open water swim metrics (distance, pace, stroke count/rate, calories)
Swim workouts Activity Tracking Features
Step counter
Auto goal (learns your activity level and assigns a daily step goal)
Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)
Sleep monitoring (monitors total sleep and periods of movement or restful sleep) Garmin Connect™
Garmin Connect™ compatible (online community where you analyze, categorize and share data)
Automatic sync (automatically transfers data to your computer) Additional
Additional
Physiological measurements: Yes
Interface: USB
Run/walk feature: Yes
Projected finish time: Yes
Race an activity: Yes
Custom alerts: Yes
Customizable lap screen
Connect IQ™ app support: Yes (watch faces, data fields, widgets and apps)
GPS/GLONASS: Yes
Wireless Connectivity: Yes
ANT+™: Yes
UltraTrac: Yes