Key Feature >Bluetooth 4.0 >Music Device >You Can Enjoy High-Fidelity Stereo Music >Clear Speech within 10 Meters >Cvc6.0 Highest Version of Bluetooth >Intelligent Noise Isolation Technology >Great Noise Isolation Earphone >Multi-Point Connection Specification | Brand | Awei | Model | A610bl | Wearing Type | In-Ear | Color | Black, White | Connectivity | Wireless | Connecting Interface | USB | Application | Mobile Phone, Computer | Plug Type | Bluetooth, USB | Sound Channel | Two-Channel (Stereo) | Frequency Response | 20-20000hz | Impedance | 16ohms | Sensitivity | 110 DB | Talk Time | 6 Hours | Music Time | 4 Hours | |