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All Amazfit T-Rex vs. Apple Watch 7 vs. Fitbit Charge 5 vs. Fitbit Versa 4 vs. Garmin 645 Music vs. Garmin Fenix 6S vs. Garmin Instinct Solar 2 vs. Garmin Venu vs. Garmin Venu 2 vs. Garmin Vivoactive HR vs. Mobvoi TicWatch 2 vs. Mobvoi TicWatch S2 vs. Polar A370 vs. Polar Loop 2 vs. TicWatch Pro 3
Amazfit T-Rex Apple Watch 7 Fitbit Charge 5 Fitbit Versa 4 Garmin 645 Music Garmin Fenix 6S Garmin Instinct Solar 2 Garmin Venu Garmin Venu 2 Garmin Vivoactive HR Mobvoi TicWatch 2 Mobvoi TicWatch S2 Polar A370 Polar Loop 2 TicWatch Pro 3

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Price and Release Date

Suggested Price$140$429$180$300$450$549$300$299$400$250$199$180$179.95$120$299
Release / Update201920212021202220182019202320192021201620172019201720152020

Activity & Fitness

Calories
Distance
Heart$
VO2max (Oxygen)
Sleep
Steps
Stress mgt
Female health
Skin temp
Breath rate

Battery

Duration20 days18 Hours7 Days6 days7 days9 DaysUp to 28 days (45mm) / 21 days (40mm), unlimited with solar5 days11 Days13 hours to 8 days1.5-2 Days2 daysUp to 3 days8 days (without notifications)3 Days
Rechargeable

Compatibility Support

Android
iOS
Windows Phone
Macn/an/a
Windowsn/an/a

Connectivity Support

Bluetooth
Cellular
GPS
NFCGarmin Pay
Wi-Fi

Display

Color
Resolution360 x 360396 x 48440,5x40,5 240 x 240240 x 240176 x 176 pixels (45mm), 156 x 156 pixels (40mm)390 x 390416 x 416148 x 205400 x 400400 x 400160 x 80454 x 454
Size1.3 inches1.9 inches1.04 inches1,58 inches1.2 inches1.2 inches0.9” x 0.9” (45mm), 0.79” x 0.79” (40mm)1.2 inches1.3 inches1.38 inches1.4 inches1.39 inches1.18 inches1.85 inches
Touch
TypeAMOLEDMicroLEDAMOLEDAMOLEDMIPMIP LCDMIPAMOLEDAMOLEDOLEDOLEDTFT LCDLEDRetina AMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMwater resistant but not waterproof5 ATM (50 Meters)5 ATM (50 Meters)5 ATM10 ATM (100 Meters)10 ATM (100 Meters)5 ATM5 ATM5 ATMIP655 ATMWR302 ATMIP68

Notifications

Phone
Emails
Texts

Software

Operating SystemBuilt-inWatchOS 8Fitbit OSFitbit OSBuilt-inGarmin Watch OSWear OSWear OSTicwear OSWear OSn/aWear OS
Apps
Music

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