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| Product Name： | Neck back sports headphone |
| Product Features： | V4.0 bluetooth headphone, with mic for cellphone |
| Product Discription： | newest neck back sports V4.0 bluetooth headphone with mic for cellphone |
| Driver Diameter | 40MM |
| Sensitivity |
103dB S.P.L at 1KHz
|
| headphone Impedance | 32Ω |
| Frequency Response | 20Hz-20KHz |
| Rated Power | 30MW/70MW |
| Cord Length | 40CM |
| Plug Type | 3.5MM |
| Mic size | 4.0MM*1.5MM |
| Mic Sensitivity | -40DB |
| Mic SNR | 58DB |