Garmin has unveiled the Forerunner 70 and Forerunner 170 GPS running smartwatches. Both feature 1.2-inch AMOLED displays, built-in GPS, heart rate tracking, sleep monitoring, and advanced training tools. The Forerunner 170 adds Garmin Pay, extra sensors, and a Music variant with onboard song storage. Battery life is rated at up to 13 days on the Forerunner 70 and 10 d…
