Garmin Instinct 3 Solar vs Garmin Instinct 3 Solar Tactical

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Instinct 3 Solar compared with Instinct 3 Solar Tactical

	GarminInstinct 3 Solar	GarminInstinct 3 Solar Tactical
Overview
Released
Released	January 2025	April 2025
Display
Case sizes
Case sizes	45 mm or 50 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	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.	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 Glass solar-charging lens	Power Glass solar-charging lens
Health and fitness
ECG
ECG	No	No
Blood oxygen
Blood oxygen	Yes	Yes
Skin temperature
Skin temperature	No	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	Garmin Elevate wrist heart rate; Pulse Ox; barometric altimeter; compass; gyroscope; accelerometer; thermometer
Health features
Health features	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	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, 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.	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. Tactical features include stealth mode, night-vision compatibility, dual-format coordinates, projected waypoints, Jumpmaster, Tactical activity and a stage timer. Rucking records pack weight. The preloaded Applied Ballistics solver requires a one-time paid unlock and works with the Applied Ballistics Quantum app.
Safety features
Safety features	Built-in white/red LED flashlight with strobe; incident detection during selected activities, assistance and LiveTrack require a paired compatible phone	Built-in white/green 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 40 days	Up to 40 days
In low-power mode
In low-power mode	Up to 100 days	Up to 100 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone and Android	iPhone and Android
Battery life detail
Battery life detail	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.	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	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.	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 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.	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. Stealth mode disables wireless communications and prevents GPS position storage/sharing; the kill switch erases user data. Night-vision mode adjusts the display and disables wrist heart rate.
Storage
Storage	128 MB; no offline music storage	128 MB; no offline music storage
Design
Weight (lightest version)
Weight (lightest version)	52 g	52 g
Software
Software	Garmin	Garmin
Case materials
Case materials	Fibre-reinforced polymer case; polymer/aluminium bezel; silicone band; maker states MIL-STD-810 thermal and shock testing	Fibre-reinforced polymer case; polymer/aluminium bezel; silicone band; maker states MIL-STD-810 thermal and shock testing
Size
Size	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.	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	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.	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	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.	Both current UK sizes are Black with Black Band. Exact UK parts: 45 mm 010-02934-50; 50 mm 010-02935-50. The separately sold 50 mm AMOLED Tactical has different display hardware and battery claims.
In the box
In the box	Instinct 3 Solar watch with silicone band; charging/data cable; documentation	Instinct 3 Solar watch with silicone band; charging/data cable; documentation