Batman Foldable Stereo Headphones with Volume Limiter Features: To listen to your music without disturbing anyone. Very light, you can take it everywhere with you: at school, on holidays… You can adjust the size so that it fits perfectly on your head! Handy folding design: you can store it easily in your bag! Frequency response: 20 - 20,000 Hz Impedance (acoustic resistance): 32 ohm Sensitivity: 85 dB. Volume control to protect your ears! Compatible with all audio and video players with headphones jack output. Specifications: Dimensions: H:23.3 x W:17.0 x D:4.0 cm Guarantee:1 year Material: Plastic Model Number: HP015BAT. Keep our kids immersed in a world of sound with colourful and kid-friendly Lexibook Batman Foldable Stereo Headphones. It is lightweight, foldable and adjustable in size. They can easily be popped into any bag, making them perfect for holidays and trips away. Totally Kids Safe with built-in sound limiter. Fully compatible and easy to use with all audio and video players with headphones jack output.