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Drivers: 40 mm, dynamic speakers
Plug: 90 degree stereo 1/8-Inch (3.5 mm) gold-plated with offset to allow use when protective phone cover is installed
Cord: 40-Inch (1,016 mm) premium twin-lead cables
Passive Noise Attenuation: Up to 33.4 dB
In the box: Serenity II noise attenuation stereo headphone, Convenient storage pouch, Airline jack adaptor, Dual stereo splitter
At home or on the go - anywhere you want to focus on the task at hand, not the Background noise - Direct sound’s Serenity II headphones are there. With the industry best passive, battery-free sound isolation and trusound tonal accuracy, all you'll hear is music, exactly the way the artist intended. Compatibility: all personal MP3 players, smart phones and tablets. Incrediplex padded, fully adjustable headband. User-friendly reparability. Foldable for easy transport. Environmentally responsible natural passive isolation - No batteries required.