The bass can not only be heard but also felt directly through vibrations. A long battery life and practical voice control round off the impressive overall package of the Bluetooth over-ear headphones. Want to not just hear the bass but also feel it? No problem with the M500B. With the built-in bass reactor, the headphones deliver an even more powerful bass experience through vibrations that can be adjusted continuously. The pressure on the ear is so evenly distributed with the M500B that it allows for a better fit to the shape of the head. This ensures that Panasonic headphones provide optimal comfort even during long listening sessions.