Forerunner 620

i second that. wrist HR with F8 is also faulty for me like 30% of the times, could be because of a wrist or a strap. But i did not see any with F8 improvement compared to F6 or older forerunners

With gps actively going(most battery intense thing you can do), a forerunner with MIP will last you like 3 to 5 days straight. OLED probably a solid 2 to 3 days straight. If you just want to wear it when not using it for activities, you get like 2 weeks before charges.

>Its a Vivoactive by another name. ironically i've been looking at the FR series to upgrade my old vivoactive. lack of altimeter is deal breaker for me.