OPPO Watch S vs Amazfit GTR 2 comparison

Compare OPPO Watch S
Compare Amazfit GTR 2
key specs
Strap ColourGreen, BlackObsidian Black
Compatible OSAndroid 10 and later, and iOS 14 and newerAndroid, iOS
Strap MaterialRubber-
Dial ShapeRoundRound
Display TypeAMOLEDAMOLED
general
BrandOPPOAmazfit
ModelWatch SGTR 2
Release dateOctober 16, 2025September 22, 2020
Model NameWatch SGTR 2
Dial ColourSilver, BlackObsidian Black, Silver
Dial ShapeRoundRound
Strap ColourGreen, BlackObsidian Black
Strap MaterialRubber-
SizeLargeRegular
Touchscreen1.46-inch AMOLEDYes
Interchangeable StrapYes-
Water Resistant5ATM + IP685 ATM
Dial MaterialStainless SteelAluminium, Stainless Steel
dimensions
Width44.98mm46.4
Height44.98mm46.4
Thickness8.9mm10.7
Weight (g)35.0039.00
product details
Sensoreight-channel optical heart rate sensor, 16-channel optical pulse oximeter sensor, ECG sensor, a wrist temperature sensor, accelerometer, gyroscope, geomagnetic sensor, air pressure sensor, ambient light sensor,Air pressure, Accelerometer, Gyroscope, 3-axis Geomagnetic sensor, ambient light sensor
Battery LifeUp to 10 days14
Charge Time90 minutes2.5 hours
Charger TypeWirelessMagnetic
Compatible Device-Android, iOS
Notification-Yes
Rechargeable Battery-Yes
connectivity features
BluetoothYesYes
Bluetooth Version5.25.0
Wi-FiYesYes
GPSYes-
Other Connectivity Features-NFC, Wi-Fi
platform and storage features
Operating SystemColorOS Watch 7.1-
Compatible Operating SystemAndroid 10 and later, and iOS 14 and newerAndroid, iOS
Processor NameBES2800BP-
Internal Memory4GB EMMC-
camera and display features
Display Resolution464x464454x454
Display TypeAMOLEDAMOLED
fitness and watch functions
Step CountYesYes
Calorie CountYesYes
Heart Rate MonitorYesYes
AltimeterYes-
CompassYesYes
CalendarYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
Number of Buttons22
Other Fitness Featuressleep tracking, sleep snoring assessment, sleep SpO2 level measurement, sleep quality score, sleep breathing rate monitoringBioTracker 2 PPG, bioogical data sensor
audio and video features
Speaker-Yes
Microphone-Yes

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