Review on Sentry Industries Inc. SPBT3: Black Bluetooth Wireless Stereo Sound Speaker - Perfect for iPhone, Android, Tablets by Jeff Perez

I have to admit I had to ask my son how to dub, but it's not difficult. I've found that it only syncs to one device at a time. Maybe that's typical. I need to go into settings to turn my phone or tablet on or off. So don't worry about these extra steps. Not difficult, but cumbersome, but as I said, all BT speakers can be equal in this regard. The sound is surprisingly good. A lot in a small package, and the design is understated. I like it.