Line Length:None Wireless Type:bluetooth Plug Type:Wireless Resistance:32? Function:For Mobile Phone,HiFi Headphone,For iPod,Sport,Common Headphone Connectors:USB Waterproof:No Communication:Wireless Active Noise-Cancellation:Yes Frequency Response Range:20-20000Hz Vocalism Principle:Hybrid technology Sensitivity:120±3dB Style:Ear Hook Volume Control:NoControl Button:Yes Headphones for smart phone:Headphones for smart phone Connectivity:Bluetooth Wireless HeadphoneSports wireless earphones:Earbud (In Ear) Package:Yes Use:Mobile Phone Function:Noise Cancelling, Microphone, Bluetooth