Garmin Enduro 3 vs Garmin Instinct 3 Solar

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Enduro 3 compared with Instinct 3 Solar

	GarminEnduro 3	GarminInstinct 3 Solar
Overview
Released
Released	August 2024	January 2025
Display
Case sizes
Case sizes	51 mm	45 mm or 50 mm
Panel
Panel	Memory-in-pixel	Memory-in-pixel
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	1.4-inch (35.56 mm) colour touchscreen, 280 x 280 pixels; five physical buttons	Monochrome, sunlight-visible, transflective memory-in-pixel display with a separate circular window; always visible, five-button controls, no touchscreen. 45 mm: 23 x 23 mm (0.9 inch); 50 mm: 27 x 27 mm (1.1 inch); both 176 x 176 pixels.
Screen protection
Screen protection	Power Sapphire solar-charging lens	Power Glass solar-charging lens
Health and fitness
ECG
ECG	Yes	No
Blood oxygen
Blood oxygen	Yes	Yes
Skin temperature
Skin temperature	Yes	No
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	Dual-band (L1 and L5)	Dual-band (L1 and L5)
Water resistance
Water resistance	100 m	100 m
Sensors
Sensors	Garmin Elevate wrist heart rate; Pulse Ox; barometric altimeter; compass; gyroscope; accelerometer; thermometer; ambient light sensor	Garmin Elevate wrist heart rate; Pulse Ox; barometric altimeter; compass; gyroscope; accelerometer; thermometer
Health features
Health features	ECG app subject to supported region, age and software requirements; skin temperature; HRV status; Body Battery; sleep score, sleep coach and naps; stress and respiration tracking; abnormal heart-rate alerts; Health Snapshot	HRV status; Body Battery; sleep score, sleep coach and naps; breathing variations; stress and respiration tracking; continuous heart rate and abnormal heart-rate alerts; Health Snapshot; menstrual cycle and pregnancy tracking through Garmin Connect; Pulse Ox availability varies by country; no ECG app
Fitness features
Fitness features	Training readiness and status; endurance and hill scores; daily suggested workouts; multisport and triathlon; wrist running dynamics and power; PacePro; ClimbPro; trail-run VO2 max; preloaded TopoActive maps; dynamic round-trip routing; NextFork and Up Ahead; downloadable courses	Training readiness and status, load focus and load ratio; Garmin Coach and daily suggested running/cycling workouts; wrist running dynamics and power; PacePro; multisport and triathlon; strength training, hiking, cycling and pool/open-water swimming. Breadcrumb courses, TracBack, reference points, waypoints and off-course alerts; full maps in paired Garmin Explore app, not built into the watch.
Safety features
Safety features	Incident detection during selected activities, assistance and LiveTrack need a paired compatible phone; built-in LED flashlight with variable white intensity, red light and strobe	Built-in white/red LED flashlight with strobe; incident detection during selected activities, assistance and LiveTrack require a paired compatible phone
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 36 days	Up to 40 days
In low-power mode
In low-power mode	Up to 92 days	Up to 100 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	Without solar: smartwatch up to 36 days; battery saver up to 92 days; GPS only 120 hours; all satellite systems 80 hours; all systems plus multi-band 60 hours; all systems plus music 22 hours; max battery GPS 210 hours; expedition GPS 77 days. With solar: smartwatch 90 days and battery saver unlimited assuming all-day wear including 3 hours daily at 50,000 lux; GPS only 320 hours and all systems 144 hours assuming continuous 50,000 lux; multi-band 90 hours under the maker's 50,000-lux/SatIQ conditions. Solar claims are conditional, not ordinary indoor runtime.	Headline claims use the 50 mm size without solar. 45 mm: smartwatch 28 days; battery saver 65 days; GPS only 40 hours, 130 with solar; all systems 28 hours, 50 with solar; all systems plus multi-band 24 hours, 40 with solar; max-battery GPS 100 hours; expedition GPS 36 days. 50 mm: smartwatch 40 days; battery saver 100 days; GPS only 60 hours, 260 with solar; all systems 40 hours, 80 with solar; all systems plus multi-band 34 hours, 60 with solar; max-battery GPS 150 hours; expedition GPS 60 days. Garmin claims unlimited smartwatch, battery-saver, max-battery GPS and expedition use with sufficient solar: everyday modes assume all-day wear and three hours outside daily at 50,000 lux; GPS modes assume use in 50,000 lux. Multi-band figures assume typical SatIQ use. Actual endurance varies with settings, activities and sunlight.
Charging
Charging	Garmin proprietary plug charging/data cable	Built-in rechargeable lithium-ion battery; proprietary Garmin charging/data cable, USB-C at the power-source end. Owner guide specifies at least 5 W from a computer or compatible AC adaptor. Solar charging is limited when the battery is full, externally powered or outside its charging temperature range.
Connectivity
Connectivity	Bluetooth, ANT+ and Wi-Fi; GPS, GLONASS, Galileo, QZSS and BeiDou with multi-band and SatIQ; Garmin Pay; Garmin Messenger uses a paired phone; offline music through compatible services	Bluetooth and ANT+; GPS, GLONASS and Galileo; multi-band GNSS with SatIQ; Garmin Pay and Garmin Share. Controls paired-phone music rather than storing offline audio; smart notifications and Garmin Messenger require a paired compatible phone.
Storage
Storage	–	128 MB; no offline music storage
Design
Weight (lightest version)
Weight (lightest version)	63 g	52 g (better)
Software
Software	Garmin	Garmin
Case materials
Case materials	Titanium bezel and fibre-reinforced polymer case; 10 ATM water rating	Fibre-reinforced polymer case; polymer/aluminium bezel; silicone band; maker states MIL-STD-810 thermal and shock testing
Size
Size	51 x 51 x 15.7 mm; 63 g with supplied UltraFit nylon strap, 57 g case only	45 mm: 45 x 45 x 14.9 mm, 52 g. 50 mm: 50 x 50 x 14.4 mm, 58 g. Maker does not identify these as case-only weights.
Bands
Bands	QuickFit 26 mm; supplied UltraFit strap fits 127–225 mm wrists; accessory straps have different fit ranges	45 mm: 22 mm band, compatible with QuickFit 22, fits 137–204 mm wrists. 50 mm: 26 mm band, compatible with QuickFit 26, fits 141–213 mm wrists.
Colours
Colours	Carbon Grey DLC Titanium with Black UltraFit Nylon Strap	Current UK listings: 45 mm Black with black band; 50 mm Black with Charcoal, Sunburst with Sunburst/Grey, and Whitestone with Black/Bolt Blue bands. Launch press photography also shows the 45 mm Twilight/Neotropic finish; its current UK sale status is not established.
In the box
In the box	Enduro 3 with black UltraFit nylon strap; charging/data cable; documentation	Instinct 3 Solar watch with silicone band; charging/data cable; documentation