Garmin Instinct 3 45mm AMOLED

Name: Garmin Instinct 3 45mm AMOLED
Brand: Garmin

Garmin Instinct 3 45mm AMOLED is a GPS sports watch released in January 2025. Key specs: case size 45 mm, screen size 1.2″, AMOLED / OLED display, battery life (smartwatch mode) 18 days.

6.8Score

Display5.9

Battery life5.6

Health tracking4.9

Sports & outdoor6.7

Build & durability5.6

price range$310–390

Full specifications

Released: January 2025
Type: GPS sports watch
Brand: Garmin
Popularity: #225 of 891
Model numbers: Instinct 3 – 50 mm, AMOLEDInstinct E – 45 mmInstinct E – 40 mmInstinct 3 – 50 mm, SolarInstinct 3 – 45 mm, Solar

45 mmCase size

1.2″Screen size

YesAMOLED / OLED display

18 daysBattery life (smartwatch mode)

32 hGPS battery life

10 ATMWater resistance

53 gWeight

YesNFC payments

Spec guide

How it ranks among GPS sports watches of 2025

Spec guide

Screen size · 1.2″Bottom 8%Battery life (smartwatch mode) · 18 daysTop 25%GPS battery life · 32 hBottom 44%Water resistance · 10 ATMTop 17%Weight · 53 gBottom 40%

Compared with GPS sports watches released in 2025. Bars show the share of models it beats.

compared with other GPS sports watches

Why is Instinct 3 45mm AMOLED a good choice?

Water resistance: 10 ATMbetter than 70% of GPS sports watches

Pixel density: 325 ppibetter than 83% of GPS sports watches

Weak points

Screen size: 1.2″worse than 94% of GPS sports watches

In rankings

#30Best GPS sports watches from $150 to $400

Specifications

Full specifications

Design & durability

Case size: 45 mm
Weight: 53 g
Thickness: 14.9 mm
Height: 45 mm
Width: 45 mm
Case material: Aluminium
Sapphire crystal: No
Lens / cover glass: Chemically Strengthened Glass
Strap material: silicone
Water resistance: 10 ATM
Water rating (maker): 10 ATM

Display

Screen size: 1.2″
Display technology: AMOLED
Panel: AMOLED
AMOLED / OLED display: Yes
Always-on display: Yes
Resolution (width): 390 px
Resolution (height): 390 px
Pixel density: 325 ppi

Battery

Battery life (smartwatch mode): 18 days
Battery life with always-on display: 7 days
Battery saver mode: 24 days
GPS battery life: 32 h
GPS battery life (dual-band): 23 h
Battery type: Lithium ion
Wireless charging: No
Charging: Garmin proprietary plug charger

Health sensors

Optical heart rate: Yes
Blood oxygen (SpO2): Yes
Temperature sensor: Yes
HRV tracking: Yes
Sleep tracking: Yes
Sensors: GPS, GLONASS, Galileo, QZSS, BeiDou, SatIQ technology, Elevate wrist heart rate monitor, Pulse Ox blood oxygen saturation monitor, Barometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer

Sports & navigation