Garmin Instinct 3 (45 mm, AMOLED)
Smartwatch · Android and iPhone
- Cheapest price
- £299
- Subscription
- Optional
- Over 3 years
- £299
Prices
- John Lewis£299View at John Lewis (opens in a new tab)
- Garmin£299.99View at Garmin (opens in a new tab)
- AmazonAmazonFind it on Amazon (opens in a new tab)
We earn commission on some of these links. It never changes the order. Disclosure
What it measures
- Heart rate
- Resting heart rate
- HRV
- Sleep stages
- Deep sleep
- Blood oxygen
- VO2 max
- Breathing rate
- Skin temperature (no)
- Readiness score
- Steps
- ECG (no)
- GPS
- Blood pressure (no)
- Cycle tracking
As garmin.com states it.
What it does
A rugged 45 mm GPS outdoor watch with an always-on AMOLED screen, multi-band GPS and an LED torch, worn on the wrist and paired with the Garmin Connect app. It records heart rate, blood oxygen, sleep and workouts.
From the description on garmin.com.
Garmin Instinct 3 (45 mm, AMOLED) specs
- Type
- Smartwatch
- Works with
- Android and iPhone
- Battery
- Up to 18 days (7 days always-on)
- Water resistance
- 10 ATM
- Size
- 45 x 45 x 14.9 mm
- Weight
- 53 g
- Display
- AMOLED, always-on, 30 mm (1.2 in) diameter, 390 x 390 pixels
- Materials
- Chemically strengthened glass lens, fibre-reinforced polymer/aluminium bezel, fibre-reinforced polymer case, QuickFit 22 mm band
- Sensors
- GPS, GLONASS, Galileo, QZSS, BeiDou, SatIQ, Elevate wrist heart rate monitor, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer, thermometer
- GPS
- Multi-band
- Connectivity
- Bluetooth, ANT+; Garmin Pay
- Extras
- LED flashlight
- Memory
- 4 GB
- Charging
- Garmin proprietary plug charger
Further specs from garmin.com.
How it compares
- To buy, it is the 24th cheapest of 67 smartwatches we compare (the middle one costs £361).
- Over three years, subscription included, it is the 24th cheapest of 67 smartwatches.
- It measures 5 of the 8 features we compare; the middle smartwatch measures 5.
- Lacks what most of them have: Skin temperature.
- It needs no subscription; 0 of the 67 do.
Garmin Instinct 3 (45 mm, AMOLED) reviews and discussions
Reviews
- DC Rainmaker review of the Garmin Instinct 3 (45 mm, AMOLED) 2025-01
- the5krunner review of the Garmin Instinct 3 (45 mm, AMOLED) 2025-02
- TechRadar review of the Garmin Instinct 3 (45 mm, AMOLED) 2025-01
Which?
- Which? tests of this kind of product members' content
Owners talking about it
- Garmin Instinct 3 Solar vs Amoled and battery life with Gps Garmin forums
- Instinct 3 with AMOLED now available! Garmin forums
Links to other sites' reviews and discussions; we do not run them and they are not ours.
Subscription
- Garmin Connect+ optional: £69.99 a year (£6.99 a month).
- Adds: AI insights (Active Intelligence), nutrition tracking, performance dashboard, LiveTrack extras
- Source: garmin.com
Questions
- Where is the Garmin Instinct 3 (45 mm, AMOLED) cheapest?
- John Lewis, at £299 when checked on 2026-10-29.
- Does the Garmin Instinct 3 (45 mm, AMOLED) need a subscription?
- Garmin Connect+ optional: £69.99 a year. It adds: AI insights (Active Intelligence), nutrition tracking, performance dashboard, LiveTrack extras
- What does the Garmin Instinct 3 (45 mm, AMOLED) cost over three years?
- £299, the price plus any required subscription.
- How does the Garmin Instinct 3 (45 mm, AMOLED) compare with other smartwatches?
- To buy, it is the 24th cheapest of 67 smartwatches we compare (the middle one costs £361). Over three years, subscription included, it is the 24th cheapest of 67 smartwatches. It measures 5 of the 8 features we compare; the middle smartwatch measures 5.
Compare with
- 1
- 3 years
- £299
- Price
- £299
- Subscription
- Optional
- 2
- 3 years
- £299
- Price
- £299
- Subscription
- None
- 3
- 3 years
- £299.90
- Price
- £299.90
- Subscription
- Optional
Readings are not a diagnosis. If you are worried about your health, speak to your GP, pharmacist or NHS 111. How we earn.