Edifier K750W Wireless Stereo Headset with Microphone 40mm dynamic 33h talk time or 55h music playback Memory foam ear padsDESCRIPTION Edifier K750W Wireless Stereo Headset with Microphone K750W Wireless Stereo Headset with Microphone Clear Calls: Dual noise canceling mics with foam windscreen for clear communication. Quality Sound: 40mm dynamic drivers for natural, high quality audio. Long Battery: 33h talk time or 55h music playback on one charge. Comfortable Design: Memory foam ear pads, detachable mic, customizable EQ via EDIFIER ConneX App. Multi Functional: