So does anyone use the "Trackstrap plus" and have any thoughts on it? I have the old 2.0 trackers that die in like 4.5 hours and it's becoming more of an issue now that I happen to log in for more time.

I was thinking of just getting the trackstrap+ since it's 120 bucks versus buying 3 of the 3.0 trackers for 300+ bucks. How do they even work? you charge the trackstrap+ itself via micro USB to a wall outlet? and then that powers the tracker? but the tracker itself still needs to get power from the wall outlet too