Bluetooth 4.1 connectivity for wireless music listening and phone calls with compatible smartphones. Aluminum touch inteface on right ear cup for easy control of music and calls. Aluminum frame, leather headband, and memory-foam earpads with soft lambskin covering. Rechargeable Lithium-Ion battery with 20 hours of play time. USB to MIcro USB cable for charging and updating. Carry pouch. Imported.