Waterproof
Water-resistant (50m)Altimeter
NoGPS
NoClock
YesSleep tracking
YesHeart rate
NoBattery Life
-Silent alarm
-Companion app platforms
-Waterproof
Water-resistant to 150ftAltimeter
NoGPS
NoClock
YesSleep tracking
YesHeart rate
-Battery Life
-Silent alarm
-Companion app platforms
iOS, Android