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Garmin fēnix 6 vs Garmin fēnix 8 AMOLED (47 mm, Sapphire)

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

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Garminfēnix 6Garminfēnix 8 AMOLED (47 mm, Sapphire)
Overview
ReleasedAugust 2019August 2024
Display
Case sizes47 mm47 mm
PanelMemory-in-pixelOLED
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.1.4-inch (35.56 mm) AMOLED touchscreen, 454 x 454 pixels, with optional always-on mode and leakproof inductive buttons.
Screen protectionCorning Gorilla Glass 3.Sapphire crystal lens on this titanium edition.
Health and fitness
ECGNoYes
Blood oxygenYesYes
Skin temperatureNoYes
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSSingle-bandDual-band (L1 and L5)
Water resistance100 m100 m
SensorsGPS, GLONASS, Galileo, Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer and thermometer.GPS, GLONASS, Galileo, QZSS and BeiDou with SatIQ multi-band positioning; Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer, thermometer, ambient light and depth sensors.
Health featuresPulse Ox for sleep or altitude acclimation, sleep, stress and Body Battery energy monitoring.Pulse Ox, skin temperature, sleep and HRV tracking; ECG app where regionally available, subject to compatible phone app and watch software.
Fitness featuresRunning and cycling metrics, multisport profiles, ClimbPro, PacePro, power manager, expedition GPS mode and course navigation.Sport-specific strength workouts, training readiness, endurance and hill scores, PacePro, ClimbPro, TopoActive maps, scuba and apnea dive activities; built-in LED flashlight.
Safety featuresIncident detection and assistance require a paired smartphone.Incident detection and assistance require a paired smartphone.
Battery and connections
Battery life (maker's claim)Up to 14 daysUp to 16 days
In low-power mode–Up to 23 days
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Storage–32 GB
Battery life detailUp to 14 days in smartwatch mode, 36 hours in GPS mode or 48 days in battery saver watch mode.Up to 16 days in smartwatch mode, seven days with always-on display, 47 hours in GPS-only mode or 35 hours with all-systems multi-band GNSS.
ChargingInternal rechargeable lithium battery.Rechargeable lithium-ion battery with Garmin proprietary plug charger.
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, Connect IQ and on-watch music. Speaker and microphone support calls and voice messaging through a paired phone; some offline voice commands work without one.
Design
Weight (lightest version)80 g73 g
SoftwareGarminGarmin
Case materialsStainless steel bezel, fibre-reinforced polymer case with metal rear cover and silicone band; 10 ATM water rating.Titanium bezel, fibre-reinforced polymer case with metal rear cover, sapphire crystal and silicone band; 10 ATM water rating and 40 m dive-rated case.
Size47 x 47 x 14.7 mm; 80 g with silicone band, 57 g case only.47 x 47 x 13.8 mm; 73 g with silicone band, 52 g case only.
BandsQuickFit 22 mm band; silicone band fits wrists 125–208 mm.QuickFit 22 mm band; silicone band fits wrists 125–208 mm.
ColoursSilver bezel with black case and band.Titanium with spark orange and graphite silicone band.

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