OTL SM0655 Super Mario Premium and Luigi Tween Folding Headphones are ideal for listening music, watching movie and playing games. Featuring mario and luigi face on each side of earcup, the nintendo duo would like to tell you that they are your perfect cool gear. These headphones foldable, comfortable with an adjustable, padded headband. Suitable for children aged 8 through to adult. Compatible with all devices (such as ipads, smartphones etc.) using a 3.5mm jack. Specification: speakers: 40 mm drivers, frequency response: 20hz - 20khz, impedance: 32 ohm, sensitivity: 100 db ± 5 db, power capability: 50 mw, rated power: 5 mw, connector: 3.5mm plug, cable length: 120 cm.