Garmin fēnix 2 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

fēnix 2 compared with fēnix 8 AMOLED (47 mm, Sapphire)
Garminfēnix 2Garminfēnix 8 AMOLED (47 mm, Sapphire)
Overview
ReleasedMarch 2014August 2024
Display
Case sizes49 mm47 mm
PanelLCDOLED
Always-on displayYesYes
Display detailTransflective monochrome LCD, 31 mm diameter and 70 × 70 pixels; negative display with red LED backlight and physical buttons.1.4-inch (35.56 mm) AMOLED touchscreen, 454 x 454 pixels, with optional always-on mode and leakproof inductive buttons.
Screen protection–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 resistance50 m100 m (better)
SensorsHigh-sensitivity GPS receiver, barometric altimeter, three-axis compass and accelerometer. Optional ANT+ heart-rate, HRM-Run, foot-pod, speed/cadence, power and tempe temperature sensors; no optical wrist heart-rate sensor.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 features–Pulse Ox, skin temperature, sleep and HRV tracking; ECG app where regionally available, subject to compatible phone app and watch software.
Fitness featuresRunning, cycling, pool and open-water swimming, multisport, hiking and skiing profiles; advanced workouts, Virtual Partner, Training Effect, VO2 max estimates, race prediction and recovery advice. Running dynamics require an HRM-Run chest strap; indoor pace and distance use the accelerometer.Sport-specific strength workouts, training readiness, endurance and hill scores, PacePro, ClimbPro, TopoActive maps, scuba and apnea dive activities; built-in LED flashlight.
Safety featuresBreadcrumb routes, waypoint navigation and TracBack to retrace the recorded route; no preloaded base maps.Incident detection and assistance require a paired smartphone.
Battery and connections
Battery life (maker's claim)Up to 35 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 detailRechargeable 500 mAh lithium-ion battery; up to five weeks in watch mode, sixteen hours with normal GPS recording or fifty hours in UltraTrac with one-minute GPS polling, according to the owner's manual.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.
ChargingUSB contact charging/data cradle and AC adapter.Rechargeable lithium-ion battery with Garmin proprietary plug charger.
ConnectivityBluetooth Smart phone notifications, Garmin Connect uploads and LiveTrack; USB computer transfer and ANT+ sensor connections. Garmin's 2015 catalogue confirms iPhone 4S or later and most Bluetooth Smart Android devices running Android 4.3 or later. The manual says ANT+ sensors cannot connect while Bluetooth is enabled.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.
Storage20 MB internal memory; up to 1,000 waypoints, fifty routes, 10,000 track points and 100 saved tracks.–
Design
Weight (lightest version)90.6 g73 g (better)
SoftwareGarminGarmin
Case materialsCurved mineral-glass lens, shock-resistant housing and polyurethane wristband; 5 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.
Size49 × 49 × 17 mm; 90.6 g.47 x 47 x 13.8 mm; 73 g with silicone band, 52 g case only.
BandsPolyurethane wristband; additional hook-and-loop fabric strap accommodates larger wrists or wearing over a jacket.QuickFit 22 mm band; silicone band fits wrists 125–208 mm.
Colours–Titanium with spark orange and graphite silicone band.
In the boxWatch, fabric wrist-strap kit, USB charging/data cable, AC adapter and quick-start manual; HRM-Run chest strap included in the Performer Bundle.–

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