HamiltonBuhl KidzPhonz Originalz Headphone - Yellow Compatible with all smartphones, tablets, laptops and most audio devices, the KIdzPhonz Express Yourself headphones are the best way to enjoy stereophonic sound while making a unique statement about yourself The ear cups on the Express Yourself headphones are your canvas to express your ideas, style, likes, thoughts - your individuality! Change your designs as often as you like, according to your mood, the season, the weather, the time of day! Adjustable headband, swivel ear cups, and removable clear plastic ear cup guards to protect and hold your designs in place Use the Design Center at KidzPhonz.com for templates, ideas and inspiration or come up with your own designs Neodynamic driver diameter: 40mm | Frequency response: 20-10,000 Hz | Impedance: 32 Ohms | Sensitivity: 108dB +/- 3dB | Rated power input: 20mW | Plug: 3.5mm | Cord: 4-foot PVC cable