The ATH-SR50BT wireless over-ear headphones deliver the exceptionally pure audio of Sound Reality in a convenient wireless design. The headphones are compatible with the high-quality aptX and AAC codes, in addition to the standard SBC codec, to provide exhilarating, full-range audio from the Bluetooth wireless signal. The headphones' specially designed 45 mm drivers are also capable of Hi-Res Audio reproduction when used with the included 1.2 m (3.9') detachable cable.