Devices are garbage
The con of the devices is that they are garbage. One in five might work as advertised. And your waisting money trying to get one that works. I hate the new one as it is a down grade from the original. The pro is better connectivity at the cost of cheapness and the battery life. You are lucky if you can get one that lasts longer than 2 months. I started repairing my own to extend battery life and even swapped the battery for a better one. Thats compatible. Niantic has nerfed all the fun in the game and this is the closest i get to playing a lot. My job does not let me take community day off so this plays for me. Never missed one since.
Filing an ftc complaint abt these things being garbage and your company refuses to allow consumers to enact the one yr warenty.