... headphone, adopting 2.4G RF technology,connet with PC,TV,iPhone etc Specifications:This product is a wireless stereo headphone, adopting ... ergonomics design,wearing more beautiful,comfortable and convenientConnet with TV,iPhone etcMicrophone:Microphone size:6mmSensitivity:-52dbImpedance:≤2.2kΩFrequency response: 75HZ ...