Combining portability with high-quality sound reproduction, the MC-40BT wireless over-ear headphones from Mackie utilize large 40 mm drivers to deliver music as the artist intended. That pure and accurate sound can be enjoyed all-day long thanks to a battery life of over 30 hours per charge, and in comfort with large, soft earpads. The addition of a built-in microphone allows you to incorporate the MC-40BT headphones throughout your day, staying in communication with friends, family and coworkers.