Garmin fēnix vs Garmin fēnix 3

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fēnix compared with fēnix 3

	Garminfēnix	Garminfēnix 3
Overview
Released
Released	2012	2015
Display
Case sizes
Case sizes	49 mm	51 mm
Panel
Panel	LCD	Memory-in-pixel
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Transflective monochrome LCD, 31 mm diameter and 70 × 70 pixels, with LED backlight and five physical buttons.	1.2-inch (30.4 mm) sunlight-readable transflective colour MIP display, 218 x 218 pixels, with button controls.
Health and fitness
ECG
ECG	No	No
Blood oxygen
Blood oxygen	No	No
Skin temperature
Skin temperature	No	No
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	No	No
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Single-band
Water resistance
Water resistance	50 m	100 m (better)
Sensors
Sensors	High-sensitivity GPS receiver, barometric altimeter, three-axis compass and temperature sensor. Optional ANT+ heart-rate, foot-pod, speed/cadence and tempe temperature sensors.	GPS, GLONASS, barometric altimeter, three-axis compass and accelerometer. Heart rate requires an optional ANT+ sensor.
Health features
Health features	–	Steps and sleep tracking; no built-in optical heart-rate sensor.
Fitness features
Fitness features	Outdoor activity profiles including hiking, mountaineering, running and cycling; configurable data fields, Auto Pause, Auto Lap and training alerts. No optical wrist heart-rate sensor.	Running, cycling, pool and open-water swimming, triathlon, hiking and skiing profiles; breadcrumb courses, TracBack, VO2 max estimate, recovery advisor and race predictor when paired with a heart-rate sensor. Running dynamics require an HRM-Run strap.
Safety features
Safety features	Waypoint, route and breadcrumb navigation with TracBack; worldwide city basemap and paperless geocaching, without preloaded detailed maps or turn-by-turn routing.	–
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 42 days	Up to 42 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone	iPhone and Android
Battery life detail
Battery life detail	Rechargeable 500 mAh lithium-ion battery; up to six weeks in watch mode, two weeks with sensors always on, sixteen hours in normal GPS mode or fifty hours in UltraTrac according to the owner's manual.	Up to six weeks in watch mode, 20 hours in GPS training mode or 50 hours in UltraTrac mode, according to the grey model's specification.
Charging
Charging	USB contact charging cradle and AC adapter.	Rechargeable 300 mAh lithium-ion battery with USB charging cable.
Connectivity
Connectivity	ANT+ sensors and wireless sharing with compatible Garmin devices; Bluetooth Smart transfer to the BaseCamp Mobile iPhone app and USB computer transfer to BaseCamp or Garmin Connect.	Bluetooth and ANT+; smart notifications, Connect IQ apps, Garmin Connect, LiveTrack through a paired phone and phone music controls.
Storage
Storage	20 MB internal memory; 1,000 waypoints, fifty routes, 10,000 track points and 100 saved tracks.	32 MB built-in memory, with 23 MB available; stores up to 1,000 waypoints, 50 routes and 100 saved tracks.
Design
Weight (lightest version)
Weight (lightest version)	82 g	82 g
Software
Software	Garmin	Garmin
Case materials
Case materials	Shock-resistant housing, mineral-glass lens and polyurethane wristband; 50 m water resistance.	Stainless steel EXO antenna/bezel and fibre-reinforced housing with silicone band; 10 ATM water rating.
Size
Size	49 × 49 × 17 mm; 82 g.	51 x 51 x 16 mm; 82 g.
Colours
Colours	–	Grey case with black band.