Over Ear Headphones BluetoothBluetooth Headphones Wireless is engineered to be more comfortable and lighter, give you superior comfort at work, commuting or exercising. let you immerse yourself in music world without noise，no matter you are in a noisy street, busy subway or bus, flight cabin with roaring engine.Noise relief technology allows you enjoy a clear and great sound qualityPremium High-Fidelity SoundSpace Saving Design for Easy CarryingAmazing Stereo Sound QualityUnparalleled comfortSpecifications:Standby time: 200 hoursTalk time: 12 hoursMusic time: 10 hoursCharging time: 3 hoursFrequency response range: 20Hz- 20KHzBattery capacity: 250mAh / 3.7VCommunication distance: 10 metersSupport protocol: HSP, HFP, A2DP, AVRCPPackage include:1* Headset stereo Bluetooth headset1* USB charging cable1* Audio LineAny issues or suggestions, contact us Via Amazon message or email, 1 business day reply is guaranteed. We are committed to 100% customer satisfaction.