Garmin Instinct 3 AMOLED vs Garmin Instinct 3 Solar

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

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Instinct 3 AMOLED compared with Instinct 3 Solar
GarminInstinct 3 AMOLEDGarminInstinct 3 Solar
Overview
ReleasedJanuary 2025January 2025
Display
Case sizes45 mm or 50 mm45 mm or 50 mm
PanelOLEDMemory-in-pixel
Always-on displayYesYes
Display detail45 mm has a 1.2-inch (30 mm) 390 x 390-pixel AMOLED display; 50 mm has a 1.3-inch (33 mm) 416 x 416-pixel AMOLED display; five-button controls, no touchscreenMonochrome, 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 protectionChemically strengthened glassPower Glass solar-charging lens
Health and fitness
ECGNoNo
Blood oxygenYesYes
Skin temperatureNoNo
Sleep apnoea alertsNoNo
High blood pressure alertsNoNo
Body compositionNoNo
Fall detectionNoNo
Crash detectionNoNo
GPSDual-band (L1 and L5)Dual-band (L1 and L5)
Water resistance100 m100 m
SensorsGarmin Elevate wrist heart rate; Pulse Ox; barometric altimeter; compass; gyroscope; accelerometer; thermometerGarmin Elevate wrist heart rate; Pulse Ox; barometric altimeter; compass; gyroscope; accelerometer; thermometer
Health featuresHRV status; Body Battery; sleep score, sleep coach and naps; stress, respiration and abnormal heart-rate alerts; Health Snapshot; Pulse Ox availability varies by country; no ECG appHRV 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 featuresTraining readiness and status; daily suggested running and cycling workouts; Garmin Coach; wrist running dynamics and power; PacePro; multisport and triathlon; breadcrumb navigation, TracBack and reference points; detailed maps available in paired Garmin Explore app, not as built-in watch mapsTraining 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 featuresBuilt-in white/red LED flashlight with strobe; incident detection during selected activities, assistance and LiveTrack require a paired compatible phoneBuilt-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)Up to 24 daysUp to 40 days
In low-power modeUp to 30 daysUp to 100 days
Mobile data optionNoNo
Works withiPhone and AndroidiPhone and Android
Storage4 GB–
Battery life detailHeadline claims use the 50 mm version. 45 mm: smartwatch up to 18 days, 7 days always-on; battery saver 24 days; GPS only 32 hours; all systems 25 hours; all systems plus multi-band 23 hours; max battery GPS 68 hours; expedition GPS 16 days. 50 mm: smartwatch 24 days, 9 days always-on; battery saver 30 days; GPS only 40 hours; all systems 32 hours; all systems plus multi-band 30 hours; max battery GPS 86 hours; expedition GPS 20 days. Multi-band figures assume typical SatIQ use. No solar charging.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.
ChargingGarmin proprietary plug charging/data cableBuilt-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.
ConnectivityBluetooth and ANT+; GPS, GLONASS, Galileo, QZSS and BeiDou; multi-band and SatIQ; Garmin Pay; controls paired-phone music but does not store offline music; Garmin Messenger requires a paired phoneBluetooth 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–128 MB; no offline music storage
Design
Weight (lightest version)53 g52 g (better)
SoftwareGarminGarmin
Case materialsFibre-reinforced polymer case and polymer/aluminium bezel; 10 ATM water rating; maker states MIL-STD-810 thermal and shock testingFibre-reinforced polymer case; polymer/aluminium bezel; silicone band; maker states MIL-STD-810 thermal and shock testing
Size45 mm is 45 x 45 x 14.9 mm and 53 g; 50 mm is 50 x 50 x 14.4 mm and 59 g; maker does not identify these as case-only weights45 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.
Bands45 mm uses QuickFit 22 mm and fits 137–204 mm wrists; 50 mm uses QuickFit 26 mm and fits 141–213 mm wrists45 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.
ColoursCurrent UK maker listings include Black, Citrine, Fern Green and Black/Bolt Blue combinations, depending on size; colours are cosmetic configurationsCurrent 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 boxInstinct 3 AMOLED watch with silicone band; charging/data cable; documentationInstinct 3 Solar watch with silicone band; charging/data cable; documentation

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