Wish you have a most pleasant shopping experience in our store.Features:100% Brand new and high quality!It can keep your ears warm while listening to music.It applies to most of the mobile phones， tablet PC， computers available on the market. Specifications:Speaker Dimension: φ40mmImpedance: 32Ω±5ΩFrequency Response: 20Hz-20KHzSensitivity: 118dB±2dBRated Power: 15mWMaximum Power: 30mWCord length: 1.2m±0.2mConnection plug: Φ3.5mm Product Material: FabricColor: BlackEarmuff Width: 8.5cmPackage includes:1 x Music Earmuffs HeadphoneHope you can do better as you can.