The WK In-ear Wired Earphones have a comfort fit. It features dynamic sound experience and noise reduction mic for a better experience. It comes with a compatible 3.5mm jack and volume buttons for easy operation.Rated output: 3mW Response Frequency : 20Hz--20kHz Sensitivity: 98±3db Impedance: 35Ω±15% Wire length: 1200mm Weight: 10g