Massive Sound - A 50mm driver and a 10 Watt rear bass-pumping passive radiator delivers rich, breathtaking sound from a small package. Never be caught off guard again. Tap & Go - Simply tap two of your speakers together for double the sound with new built-in Easy-Link technology. Gather your friends speakers and turn any area into a concert! Built-in Bluetooth 5.0 technology provides a seamless hassle-free connection with most streaming devices while preserving precious battery life for extra hours of listening.