Official Taobao Link: https://item.taobao.com/item.htm?id=631357271600 Specification Driver: 1BA Bellsing 29689 + 10mm Titanium Composite Diaphragm Dynamic Driver Frequency reponse:10Hz-20kHz Impedance: 20ohm@1khz Sensitivity: 110db@1khz@1mw Connector: QDC 2-Pin 0.78mm Cable length: 1.2M