Garmin fēnix 6 vs Garmin Forerunner 945

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

Better figure, where one is clearly better

fēnix 6 compared with Forerunner 945
Garminfēnix 6GarminForerunner 945
Overview
ReleasedAugust 2019April 2019
Display
Case sizes47 mm47 mm
PanelMemory-in-pixelMemory-in-pixel
Always-on displayYesYes
Display detail1.3-inch (33.02 mm) always-on transflective colour memory-in-pixel display, 260 x 260 pixels, with five buttons.1.2-inch (30.4 mm) transflective colour memory-in-pixel display, 240 x 240 pixels, with button controls.
Screen protectionCorning Gorilla Glass 3.Gorilla Glass 3 with DX coating.
Health and fitness
ECGNoNo
Blood oxygenYesYes
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, Galileo, Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer and thermometer.GPS, GLONASS, Galileo, Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer and thermometer.
Health featuresPulse Ox for sleep or altitude acclimation, sleep, stress and Body Battery energy monitoring.Pulse Ox for sleep and altitude acclimation, advanced sleep, all-day stress and Body Battery energy monitoring.
Fitness featuresRunning and cycling metrics, multisport profiles, ClimbPro, PacePro, power manager, expedition GPS mode and course navigation.Running, cycling, swimming and triathlon profiles; training status and load focus, heat- and altitude-adjusted VO2 max, recovery time, Garmin Coach and full-colour maps with Trendline routing. Full running dynamics require a compatible strap or pod.
Safety featuresIncident detection and assistance require a paired smartphone.Incident detection and assistance require a paired smartphone; LiveTrack and Group LiveTrack.
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 14 days in smartwatch mode, 36 hours in GPS mode or 48 days in battery saver watch mode.Up to two weeks in smartwatch mode, 36 hours in GPS mode without music or ten hours with GPS and music.
ChargingInternal rechargeable lithium battery.Rechargeable battery with Garmin charging cable.
ConnectivityBluetooth Smart and ANT+; smart notifications, Connect IQ, Garmin Pay and phone music controls. The standard model does not store music.Bluetooth, ANT+ and Wi-Fi; Garmin Pay, smart notifications and on-watch music storage for up to 1,000 songs.
Design
Weight (lightest version)80 g50 g (better)
SoftwareGarminGarmin
Case materialsStainless steel bezel, fibre-reinforced polymer case with metal rear cover and silicone band; 10 ATM water rating.Fibre-reinforced polymer bezel and silicone band; 5 ATM water rating.
Size47 x 47 x 14.7 mm; 80 g with silicone band, 57 g case only.47 x 47 x 13.7 mm; 50 g.
BandsQuickFit 22 mm band; silicone band fits wrists 125–208 mm.QuickFit-compatible 22 mm band; fits wrists 130–220 mm.
ColoursSilver bezel with black case and band.Black.

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