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Garmin fēnix 5 Plus vs Garmin fēnix 8 AMOLED (47 mm, Sapphire)

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

Better figure, where one is clearly better

Garminfēnix 5 PlusGarminfēnix 8 AMOLED (47 mm, Sapphire)
Overview
ReleasedJune 2018August 2024
Display
Case sizes47 mm47 mm
PanelMemory-in-pixelOLED
Always-on displayYesYes
Display detail1.2-inch (30.4 mm) colour transflective MIP display, 240 x 240 pixels, with button controls.1.4-inch (35.56 mm) AMOLED touchscreen, 454 x 454 pixels, with optional always-on mode and leakproof inductive buttons.
Screen protectionDomed chemically strengthened glass or sapphire crystal, depending on configuration.Sapphire crystal lens on this titanium edition.
Health and fitness
ECGNoYes
Blood oxygenNoYes
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, barometric altimeter, three-axis 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 featuresWrist heart rate and daily activity tracking; wrist Pulse Ox is reserved for the distinct fēnix 5X Plus.Pulse Ox, skin temperature, sleep and HRV tracking; ECG app where regionally available, subject to compatible phone app and watch software.
Fitness featuresRunning, cycling, swimming and outdoor multisport profiles, VO2 max and recovery metrics, preloaded colour TOPO maps and Trendline popularity routing.Sport-specific strength workouts, training readiness, endurance and hill scores, PacePro, ClimbPro, TopoActive maps, scuba and apnea dive activities; built-in LED flashlight.
Safety features–Incident detection and assistance require a paired smartphone.
Battery and connections
Battery life (maker's claim)Up to 10 daysUp to 16 days
In low-power modeUp to 38 daysUp to 23 days
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Storage16 GB32 GB
Battery life detailUp to 10 days in smartwatch mode, 18 hours with GPS, seven hours with GPS and music, or 38 hours in UltraTrac 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.
ChargingRechargeable battery with Garmin charging cable.Rechargeable lithium-ion battery with Garmin proprietary plug charger.
ConnectivityBluetooth, ANT+ and Wi-Fi; smart notifications, Garmin Pay, Connect IQ, Garmin Connect, LiveTrack and GroupTrack with a paired phone. Stores up to 500 songs for Bluetooth headphone playback.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.
Storage16 GB of memory/history, including map and music storage.–
Design
Weight (lightest version)86 g73 g
SoftwareGarminGarmin
Case materialsFibre-reinforced polymer case with stainless-steel bezel and metal rear cover; 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 15.8 mm; 86 g for the standard version.47 x 47 x 13.8 mm; 73 g with silicone band, 52 g case only.
BandsQuickFit 22 mm interchangeable band.QuickFit 22 mm band; silicone band fits wrists 125–208 mm.
ColoursBlack case with dark metal bezel and black silicone band.Titanium with spark orange and graphite silicone band.

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