best earphones 1.Retractable cable and metal housing 2.Competitive price and high quality 3.OEM/ODM is welcome best earphones The parameter:Frequency response: 20Hz to 20kHz Speaker size: 10mm x 6u x 16 Ohms (±10%) Sensitivity: 95 ±3dB Maximum input power: 10mW Plug: 3.5mm stereo Cable length: 82cmThe specific description:*retractable earphone is easy to stock or use .*fashionable earphone with ...