Garmin fēnix 3 HR vs Garmin fēnix 5

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

fēnix 3 HR compared with fēnix 5
Garminfēnix 3 HRGarminfēnix 5
Overview
Released2016March 2017
Display
Case sizes51.5 mm47 mm
PanelMemory-in-pixelMemory-in-pixel
Always-on displayYesYes
Display detail1.2-inch (30.4 mm) transflective colour MIP display, 218 x 218 pixels, with button controls.1.2-inch (30.5 mm) always-on transflective colour display, 240 x 240 pixels, with button controls.
Screen protectionDomed sapphire lens.–
Health and fitness
ECGNoNo
Blood oxygenNoNo
Skin temperatureNoNo
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSSingle-bandSingle-band
Water resistance100 m100 m
SensorsGPS, GLONASS, Garmin Elevate optical wrist heart rate, barometric altimeter, three-axis compass and accelerometer.GPS, GLONASS, Garmin Elevate wrist heart rate, barometric altimeter, three-axis compass, gyroscope, accelerometer and thermometer.
Health featuresAll-day heart rate, steps and sleep tracking; intensity minutes.Wrist heart rate, steps, sleep and stress tracking.
Fitness featuresRunning, cycling, swimming, triathlon, hiking, skiing, golf and rowing profiles; breadcrumb courses and TracBack; VO2 max estimate, recovery advisor and race predictor. Stride length, ground-contact balance and vertical ratio require a compatible chest strap.Running, cycling, pool and open-water swimming, skiing, golf and paddle-sport profiles; training status, training effect, VO2 max, recovery advisor and course/track navigation. Running dynamics require a compatible heart-rate strap.
Battery and connections
Battery life (maker's claim)Up to 14 daysUp to 14 days
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Battery life detailUp to two weeks in smartwatch mode with 24/7 heart rate, 16 hours in GPS training mode or 40 hours in UltraTrac mode. Garmin's launch release also stated up to three weeks in watch mode without the same smartwatch use.Up to 14 days in smartwatch mode, 21 hours in GPS mode or 44 hours in UltraTrac with wrist heart rate on, according to the Singapore product specification.
ChargingRechargeable 300 mAh lithium-ion battery with USB charging cable.Rechargeable lithium-ion battery.
ConnectivityBluetooth, ANT+ and Wi-Fi; smart notifications, Connect IQ, Garmin Connect and LiveTrack through a paired phone.ANT+ and Bluetooth smartphone pairing; smart notifications, Garmin Connect and Connect IQ; phone music controls.
Storage32 MB built-in memory, with 23 MB available; up to 1,000 waypoints and 30 routes.–
Design
Weight (lightest version)86.1 g85 g (better)
SoftwareGarminGarmin
Case materialsPVD stainless steel bezel and buttons, reinforced housing and treated silicone band; 10 ATM water rating.Stainless steel bezel, buttons and rear case with silicone band; 10 ATM water rating.
Size51.5 x 51.5 x 16 mm; 86.1 g with silicone band.47 x 47 x 15.5 mm; 85 g with silicone band.
Bands–QuickFit interchangeable band.
ColoursDark grey case with black silicone band.Grey case with black silicone band.

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