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Fitbit Charge 4 Fitbit Flex Jawbone UP3 Polar A370 TomTom Spark Xiaomi Mi Watch

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Price and Release Date

Suggested Price$149$100$180$179.95$150$130
Release / Update202020132013201720152020

Activity & Fitness

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

Battery

Duration7 days5 days7 daysUp to 3 days14 Days
Rechargeable

Compatibility Support

Android
iOS
Windows Phone
Macn/a
WindowsNot yetn/a

Connectivity Support

Bluetooth
Cellular
GPS
NFCFitbit Pay
Wi-Fi

Display

Color
Resolution66x18n/an/a160 x 80454 x 454
Size.721 inchesn/an/a1.18 inches1.39 inches
Touchn/an/a
TypeOLEDLEDn/aTFT LCDLCDAMOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATMWR305 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSn/an/aBuilt-in
Apps
MusicSpotify control

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