Specifications Impedance: 32ohm Sensitivity: 102&plusmn3dB Frequency Response: 20-20000HZ Cable: 1.5m Connectors : 3.5mm Package include: 1pc Headphones It suitable for Children age 8+ RockPapa Headphones are built to be attractive enough for adult and Children It has rich sound for a lot of audio devices - Mobiles, PC, Pads, DVDs, MP3s, Game Players, Radio and more. - 85/94dB Safe Volume Limiting : Specially design to protect your childrens hearing, this kids headphones can be limited to the sound level of 85dB in peaceful environment as home/room/study, and also limited to the sound level of 94dB in different noise environments as airplane/car/school, the sound are still safe and clear. - Stereo Sound & Share Port : Built-in 40mm audio driver to ensure rich bass and crisp midrange which provides excellent sound performance, this wired headphones is perfect for playing the phone/computer games and listening music. also the share port function let kids can insert another headphone plug into the sharing jack to share audio with friends or families, no splitters or special cables needed. - Microphone & Compatibility : Rockpapa wired headphones works with the in-line microphone perfect for online and calls, also play/pause the music, This over-ear headphones support devices with 3.5mm audio jack like Chromebook, Tablet, Computer, Laptop, PC, Switch, CD player, Oculus etc. - Comfortable & Foldable : Super soft earmuffs and headband, adjustable size, let kids/boys/girls/teens/adults wear Rockpapa Share 1 headphones wired, no ear pressure, extremely comfortable. Classic folding design makes it easier to carry and store, and this foldable headphones is suitable for travel/study that use in car, airplane, airport, school, classroom, home, office ect. - Rockpapa Service : Rockpapa All Headphones Wired have the protection against manufacturer defects at no extra charge. Quickly response customer service within 12-24 hours, for any questions while using.