Direct Sound Serenity II Headphones

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.