Forerunner 735XT Gear S Alta Talkband B2
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Basic Info

Suggested Price $450 $250 $130 $180
Release 2016 2013 2016 2015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration 14 hours to 11 days n/a 5 days 3 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution 215 x 180 480 x 360 n/a 128 x 88
Size 1.23 inches 2 inches n/a 0.73 inches
Touch n/a n/a
Type n/a Super AMOLED OLED PMOLED

Functions

Audio Speaker Bluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance 5 ATM IP67 n/a IP57

Notifications

Phone
Emails n/a
Texts

Software

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

All Wearables