Sony MDR1ABT/S Hi-Res Bluetooth Stereo Over-Ear Headphones Listen wirelessly to compatible Bluetooth audio devices, LDAC for optimum Bluetooth Audio Streaming, Control your music with Touch sensor control panel NFC easy connect for quick and simple Bluetooth pairing with a tap, Integrated, rechargeable battery for up to 30 hours of music, S-Master HX digital amplifier for earthshaking bass and delicate highs Reproduces natural and expansive sound with DSEE, 40 mm ALCP driver units for articulate audio (4-100 Hz with cord), Beat Response Control for improved bass and transient response