Polar’s new M430 flagship running watch has wrist-based heart rate sensors

Polar has just announced its newest flagship running watch, and the update is right in line with what you might expect for a 2017 health-and fitness-tracking wearable: it includes wrist-based heart rate sensors.The new M430, which is the follow up to Polar’s M400 flagship running watch, has six LED lights for optical heart rate sensing, built-in GPS, and a thinner, lighter build. It looks pretty similar to the previous model — still has a monochrome display, and still has that same u