Type: Wireless headphone (With cord)Battery: 400mADriverUnit: 40 mmFunction: volume control, pause/Play device, MIC unctionStead by time: 100 hoursPlay time: 18 hoursFrequency Response: 20 Hz-20KHzCord length: 1. 2 m‡10%Connector: 3. 5 mm stereo plugSensitivity: 114dab/mWAudio source: communication equipment