Garmin Fenix 3
Tech specs 
Size51.0 x 51.0 x 16.0 mm
MaterialPlastic with silicon band. Also comes in various Sapphire versions.
Battery300mAh lithium-ion
Battery lifeUp to 50 hours in UltraTrac mode; up to 20 hours in GPS training mode; up to 6 weeks in watch mode
Water-resistance10 ATM
Weight82 grams
SensorAccelerometer, barometric altimeter, electronic compass, GPS
Display205 x 148 pixels; transflective MIP color
Screen size30.4 mm diameter
ColorsGray, Silver - with various color bands.
OtherPLATFORM: Proprietary OS
PROCESSOR: Single Core Processor
CONNECTIVITY: Bluetooth Smart, ANT+, Wi-Fi
Activity tracking 
Calories burnedYes
Heart rate
Stress & recovery
Pulse Ox
Respiration rate
UV exposure
Skin temperature
Galvanic skin response
Hydration level
Calorie intake
GPSGPS and GLONASS enabled
Running featuresvirtual pacer, VO2 max estimate, recovery advisor, race predictor, running dynamics, calculates distance for indoor workouts, personal records, virtual partner/racer
Swimming featureslengths, distance, pace, stroke count/rate, calories; stroke type identification; open water swim metrics; swim workouts
Other - Multi sport
- Music control, find my phone
- Features physiological measurements (stress score, performance condition and lactate threshold)
- Remembers 100 hours of activity data
- built in memory: 32 MB; available 23 MB
- hunt/fish calendar, sun moon information, area calculation
- ski features
- rowing
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
Affiliate link*Amazon | Garmin
Read moreArticle
*Disclosure: We are a professional review site that receives a small commission from sales of certain items, but the price is the same for you. See our affiliate disclosure page for more details.
**All tech specs and images on this page come from manufacturers. These may change over time as manufacturers sometimes update their devices. While we cannot guarantee absolute accuracy of information on this page, we promise to review this content regularly and do our best to bring you the most up-to-date information. To be absolutely sure of tech specs of a particular device, we recommend checking the manufacturer’s website.