Heart rate
Chest strap compatibleAltimeter
YesGPS
YesClock
YesWaterproof
YesSleep tracking
-Waterproofing
-Companion app platforms
-Battery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
-GPS
YesClock
-Waterproof
Waterproof (50m)Sleep tracking
YesWaterproofing
-Companion app platforms
-Battery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
YesGPS
Uses smartphone GPSClock
YesWaterproof
-Sleep tracking
-Waterproofing
Water-resistantCompanion app platforms
-Battery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
YesGPS
Uses smartphone GPSClock
YesWaterproof
NoSleep tracking
YesWaterproofing
-Companion app platforms
iOS, AndroidBattery Life
4 daysSilent alarm
YesRAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
YesGPS
YesClock
YesWaterproof
NoSleep tracking
YesWaterproofing
-Companion app platforms
iOS, Android, WindowsBattery Life
7 daysSilent alarm
YesRAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
YesGPS
YesClock
YesWaterproof
Water-resistantSleep tracking
-Waterproofing
-Companion app platforms
Android, iOSBattery Life
-Silent alarm
-RAM
512 MBDisplay
1.5" Curved Super AMOLEDProcessor
Dual-core 1.0 GHz Exynos 3250Battery
200 mAh Li-ion Typical usage time: 3 to 4 days, Standby time: Up to 5 daysDisplay Resolution
1.5" Curved Super AMOLEDScreen resolution
322 pixelsAuto update
English German, Japanese, Portuguese, Spanish, French and ItalianOperating System
Tizen for WearablesWeight
3.84 ouncesConectivity
WIFI (802.11 b/g/n) and Bluetooth (Bluetooth® 4.1)ROM
4 GBHeart rate
NoAltimeter
YesGPS
Uses smartphone GPSClock
NoWaterproof
-Sleep tracking
-Waterproofing
Fabric yes, after removing sensorsCompanion app platforms
iOS, Android, Windows Phone, webBattery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
YesGPS
-Clock
YesWaterproof
-Sleep tracking
Yes Waterproofing
Splash-resistantCompanion app platforms
-Battery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-Heart rate
YesAltimeter
NoGPS
NoClock
-Waterproof
-Sleep tracking
-Waterproofing
Splash-resistantCompanion app platforms
-Battery Life
-Silent alarm
-RAM
-Display
-Processor
-Battery
-Display Resolution
-Screen resolution
-Auto update
-Operating System
-Weight
-Conectivity
-ROM
-