Garmin fēnix 3 HR vs Garmin Forerunner 935

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

Better figure, where one is clearly better

fēnix 3 HR compared with Forerunner 935
Garminfēnix 3 HRGarminForerunner 935
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 (30.4 mm) sunlight-readable transflective colour MIP display, 240 x 240 pixels, with button controls.
Screen protectionDomed sapphire lens.Glass 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 m (better)50 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, compass, gyroscope and accelerometer.
Health featuresAll-day heart rate, steps and sleep tracking; intensity minutes.All-day heart rate, steps, sleep and intensity minutes.
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, triathlon, skiing, hiking and golf profiles; auto multisport switching, training status and load, aerobic and anaerobic training effect, VO2 max, recovery time and course guidance. Running dynamics require a compatible strap or Running Dynamics Pod.
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 two weeks in smartwatch mode, 21 hours in GPS/heart-rate mode or 44 hours in UltraTrac without wrist heart rate per Garmin Singapore's exact specification table. Garmin's US launch release instead stated 24 GPS hours and 50 UltraTrac hours without matching those conditions.
ChargingRechargeable 300 mAh lithium-ion battery with USB charging cable.Rechargeable lithium-ion battery with Garmin charging cable.
ConnectivityBluetooth, ANT+ and Wi-Fi; smart notifications, Connect IQ, Garmin Connect and LiveTrack through a paired phone.Bluetooth Smart, ANT+ and Wi-Fi; smart notifications, Connect IQ, Garmin Connect, LiveTrack and phone music controls.
Storage32 MB built-in memory, with 23 MB available; up to 1,000 waypoints and 30 routes.64 MB memory/history.
Design
Weight (lightest version)86.1 g49 g (better)
SoftwareGarminGarmin
Case materialsPVD stainless steel bezel and buttons, reinforced housing and treated silicone band; 10 ATM water rating.Fibre-reinforced polymer case and bezel with silicone band; 5 ATM water rating.
Size51.5 x 51.5 x 16 mm; 86.1 g with silicone band.47 x 47 x 13.9 mm; 49 g.
Bands–QuickFit 22 mm interchangeable band.
ColoursDark grey case with black silicone band.Black case with force yellow band.

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