Garmin Fenix 5X
Tech specs 
Size51.0 x 51.0 x 17.5 mm
MaterialSapphire with Silicon band.
Battery lifeUp to 12 days in smartwatch mode (depending on settings), up to 20 hours in GPS mode, and up to 50 hours in UltraTrac battery saver mode
Water-resistance10 ATM
WeightWith silicone band: 3.5 oz (98.0 g)
SensorAccelerometer, optical heart rate sensor, barometric altimeter, electronic compass, GPS, GLONASS
Display240 x 240 pixels; sunlight-visible, always-on, low power, colorful display
Screen size30.5mm diameter
ColorsSlate Gray, Silver, Champagne - comes with interchangeable bands in various colors.
OtherPLATFORM: Proprietory
MEMORY: 64 MB; available 54 MB
Activity tracking 
Calories burnedYes
Heart rate24/7
Stress & recoveryYes
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 Maps: Preloaded topographic and cycling maps, plus more than 40,000 golf courses around the world
- Multi sport
- Music control, find my phone
- Features physiological measurements (stress score, performance condition and lactate threshold)
- built in memory: 12 GB.
- hunt/fish calendar, sun moon information, area calculation
- many other features...
Non-fitness functions 
Smartphone notificationsYes
On-board music storage
Connected pay
Affiliate link*Amazon | Garmin
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