Features: APR(Acoustic pulse reflection) tone tuning technology, 40mm SS(Surging sound) drive unit, excellent sound quality. 3.5mm gold plated plug, line control and omnidirectional microphone. Light-weight and wide headband for best wearing experience. Sealed circumaural design, blocking unwanted outside noises. Microphone adopts noise reduction technology that can produce clearer voice. Super-soft padded leatherette headband and leatherette padding on cups.