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

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fēnix 5X compared with fēnix 8 AMOLED (47 mm, Sapphire)

	Garminfēnix 5X	Garminfēnix 8 AMOLED (47 mm, Sapphire)
Overview
Released
Released	March 2017	August 2024
Display
Case sizes
Case sizes	51 mm	47 mm
Panel
Panel	–	OLED
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Always-on transflective colour Garmin Chroma display, 1.2 inches (30.5 mm), 240 × 240 pixels, with 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
Screen protection	–	Sapphire crystal lens on this titanium edition.
Health and fitness
ECG
ECG	No	Yes
Blood oxygen
Blood oxygen	No	Yes
Skin temperature
Skin temperature	No	Yes
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	No	No
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Dual-band (L1 and L5)
Water resistance
Water resistance	100 m	100 m
Sensors
Sensors	GPS, GLONASS, Garmin Elevate optical 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 features
Health features	–	Pulse Ox, skin temperature, sleep and HRV tracking; ECG app where regionally available, subject to compatible phone app and watch software.
Fitness features
Fitness features	Running, cycling, pool and open-water swimming, skiing, golf and paddle-sport profiles; training status, aerobic and anaerobic training effect, VO2 max estimates and recovery advice. Additional running dynamics require a compatible chest strap.	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
Safety features	Preloaded colour topographic and cycling maps, golf courses, round-trip route generation, turn-by-turn guidance and nearby points of interest. European editions have preloaded European topographic maps; map regions vary by market. TracBack and connected LiveTrack/GroupTrack also supported.	Incident detection and assistance require a paired smartphone.
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 12 days	Up to 16 days
In low-power mode
In low-power mode	–	Up to 23 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone and Android	iPhone and Android
Storage
Storage	–	32 GB
Battery life detail
Battery life detail	Up to twelve days in smartwatch mode, twenty hours in GPS mode or thirty hours in UltraTrac with wrist heart rate on, according to the Singapore specification; the European launch release quotes thirty-five hours UltraTrac.	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.
Charging
Charging	Rechargeable lithium-ion battery with USB charging/data cable.	Rechargeable lithium-ion battery with Garmin proprietary plug charger.
Connectivity
Connectivity	Wi-Fi, Bluetooth and ANT+; smartphone notifications, Garmin Connect uploads, Connect IQ apps and phone music controls.	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.
Storage
Storage	Singapore specification lists 12 GB total and 8 GB available; 1,000 waypoints, fifty routes, 10,000 track points and 100 saved tracks.	–
Design
Weight (lightest version)
Weight (lightest version)	98 g	73 g (better)
Software
Software	Garmin	Garmin
Case materials
Case materials	Sapphire-glass lens, stainless-steel bezel, buttons and rear case; 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.
Size
Size	51 × 51 × 17.5 mm; 98 g with silicone band.	47 x 47 x 13.8 mm; 73 g with silicone band, 52 g case only.
Bands
Bands	QuickFit interchangeable bands.	QuickFit 22 mm band; silicone band fits wrists 125–208 mm.
Colours
Colours	Slate-grey model with black silicone band pictured.	Titanium with spark orange and graphite silicone band.