Garmin Instinct 3 Solar Smartwatch 45mm vs Amazfit T-Rex Ultra 2 Smartwatch

General

BrandGarminAmazfit
Model NameInstinct 3 SolarT-Rex Ultra 2
Ideal ForMen, WomenMen, Women
Sales PackageInstinct 3 Solar 45mm, Charging/data cable, DocumentationSmartwatch, User Manual, Charger

Design and Body

Weight52 g89.2 g
MaterialFiber-Reinforced Polymer/AluminumFiber-reinforced polymer Case with Grade 5 Titanium Bezel
Strap22mm Silicon26mm Silicon
ShapeCircleCircle
Water ResistantYesYes
Water Resistant Depth100 m100 m
Water Resistant Certificate10 ATM10 ATM
Dust ProofYes
Scratch ResistantYes

Display

TypeBlack & White Sunlight-visible, transflective memory-in-pixel (MIP)Color AMOLED
TouchNoYes
Size0.9 inches1.5 inches
Resolution176 x 176 pixels480 x 480 pixels
PPI453 ppi322 ppi
Ambient Light SensorYes
Always On DisplayYesYes
Glass TypePower GlassSapphire
FeaturesUpto 3000 nits brightness

Memory

Inbuilt Memory128 MB64 GB

Connectivity

Wi-FiYes, Wi-Fi 2.4GHz
BluetoothYesYes, 5.2
Bluetooth CallingNoYes
GPSYesYes

Extra

GyroscopeYesYes
Inbuilt MicrophoneYesYes
Inbuilt SpeakerYesYes
NotificationsYesYes
Extra FeaturesBuilt-in Sports Apps, Health and Wellness180 Sports Modes, 120 Watch Faces, Full-Color Preloaded Base Maps, Ski & Alpine Mapping

Camera

CameraNo
FlashYes, LEDYes, Dual LED

Technical

OSZepp OS 2.0
Compatible OSAndroid, iOSAndroid 7.0 or later and iOS 12.0 and above

Multimedia

MusicYesNo

Battery

Battery Capacity870 mAh
Battery TypeLithium ion
Battery Backup28 days1 month
StandBy TimeUnlimited with solar

Fitness Features and Sensors

Heart Rate MonitorYesYes
SpO2 (Blood Oxygen) MonitorYesYes
BP MonitorYes
Temperature SensorYesYes
PedometerYesYes
AltimeterYesYes
CompassYesYes
Sleep MonitorYesYes
ReminderYesYes
Meters and SensorsAccelerometer, Calorie Count, Step CountAccelerometer, Calorie Count, Step Count, Geomagnetic, BioTracker 6.0 PPG biometric sensor
Extra FeaturesAlarm Clock, Stopwatch, TimerAlarm Clock, Stopwatch, Timer

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