Fenix 3 Forerunner 735XT Talkband B2 Ray Mi Band 2
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Basic Info

Suggested Price $500 $450 $180 $100 $23
Release 2015 2016 2015 2016 2016

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart n/a
Oxygen
Sleep
Steps n/a
Swim

Battery

Duration 50 hours to 6 weeks 14 hours to 11 days 3 days 6 months 20 hours
Rechargeable

Compatibility

Android
iOS
Windows Phone n/a n/a n/a n/a
Mac n/a n/a n/a n/a n/a
Windows n/a n/a n/a n/a n/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color n/a
Resolution 218 x 218 215 x 180 128 x 88 n/a n/a
Size 1.2 inches 1.23 inches 0.73 inches n/a 0.42 inches
Touch n/a n/a
Type Chroma LED n/a PMOLED LED OLED

Functions

Audio Speaker Bluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance 10 ATM 5 ATM IP57 5 ATM IP67

Notifications

Phone
Emails
Texts

Software

Operating System n/a n/a n/a n/a n/a
Apps
Music

All Wearables