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All Amazfit T-Rex vs. Apple Apple Watch Ultra 2 vs. ASUS ZenWatch 3 vs. Fitbit Ace 3 vs. Fitbit Inspire 2 vs. Garmin 645 Music vs. Garmin Garmin Fenix Pro 7 (Sapphire) vs. Garmin Instinct vs. Google Pixel Watch 2 vs. Samsung Galaxy Fit e vs. Samsung Galaxy Watch 4 vs. Samsung Galaxy Watch 6
Amazfit T-Rex Apple Apple Watch Ultra 2 ASUS ZenWatch 3 Fitbit Ace 3 Fitbit Inspire 2 Garmin 645 Music Garmin Garmin Fenix Pro 7 (Sapphire) Garmin Instinct Google Pixel Watch 2 Samsung Galaxy Fit e Samsung Galaxy Watch 4 Samsung Galaxy Watch 6

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Price and Release Date

Suggested Price$140$799$229$130$100$450$799$300$350$99$250$299
Release / Update201920232017202120202018202320182023201920212023

Activity & Fitness

Calories
Distance
HeartThird-generation optical heart sensor
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate

Battery

Duration20 daysUp to 36 hours normal use, Up to 72 hours in Low Power Mode488 Days10 Days7 days11 days14 days24 hours7 days40 HoursUp to 40 hours
Rechargeable

Compatibility Support

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity Support

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 360502 x 410 pixels400 x 400240 x 240141 x 63240 x 240240 x 240128 x 128384 x 384 pixels128x64396 x 396480 x 480 pixels
Size1.3 inches49mm1.39 inches1.47 inches1.47 inches1.2 inches1.3 inches0.9 inches1.2"0.74 inches1.9 inches1.5 inch
Touch
TypeAMOLEDAlways-On Retina LTPO OLEDAMOLEDPMOLEDOLEDMIPMIP LCDAMOLEDAMOLEDOLEDAMOLEDSuper AMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMWater resistance 100m, Dust resistance IP6X, EN13319 recreational scuba diving to 40m, Tested to MIL-STD 810H5 ATM5 ATM5 ATM10 ATM (100 meters)10 ATM (100 Meters)5 ATM (50 Meters)5 ATM5 ATM (50 Meters)IP68

Notifications

Phone
Emails
Texts

Software

Operating SystemBuilt-inWatchOS 10Android Wear 2Built-inFitbit OSGarmin Watch OSWear OS 4FreeRTOSWear OS 3Wear OS 4
Apps
Music

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