The wearable is the company's most advanced yet, offering standard fitness and sleep tracking, along with optical heart rate monitoring, GPS, and standalone music functionality. (pocket-lint.com)
Some GPS watches have optical heart rate monitors built in, giving you more data and extra convenience, but they will cost you more. (tomsguide.com)
It has all the usual activity and sleep tracking features, along with optical heart rate monitoring, built - in GPS and standalone music functionality. (pocket-lint.com)