Review on Enhance Your Nintendo-Switch Gaming with SINGLAND Joy-Con Controller - Left&Right Wireless Remote with Wake-up Function (Transparent) by Brett Robinson

I bought these based on fairly positive reviews although I was skeptical that the price was less than half the official Nintendo version. For 5 days they worked fine, then the remote connection to the switch kept losing (connected to the tablet worked fine). Then the controller on the right started buzzing non-stop no matter what game was played or settings adjusted. After about two weeks, the left controller stopped connecting at all, either remotely or to the tablet. Bring them back and just bite the bullet for official Nintendo devices.