I only want to track my HR during an activity and just save battery the rest of the time. However, even when I disable the HR sensor or turn on the battery saver, I noticed that my Venu 3's green lights are flashing very fast (individual flashes visible; when I turn the HR on, it goes to a constant green light, individual flashes not visible).
Even when the HR is disabled or the battery saver enabled, it only stops flashing when I take the watch off. It switches back on whenever something comes into contact with the sensor. Is this normal?
I only just got the watch, and my previous watch (vivoactive 3) only flashed green when I activated the HR sensor during an activity.