Specifications Type: Open Air, Dynamic – Driver Unit: 40mm Diameter, dome type – Power Handling Capacity: 50mW – Impedence: 32 ohms at 1 kHz – Sensitivity: 108 dB/mW – Frequency response: 12-22 00 Hz – Cord : 1.2 m with stereo mini plug – Mass: Approx. 125 g without cord – Supplied accsessories: Earpads (2) Still comfortable to use 1. When exercising, because the material is safe and the soft padding doesn’t come off easily 2. High quality sound gives you a dynamic audio experience 3. Stereo with noise canceling function 4. AMR-WB high quality microphone (Adopt double bandwidth in frequent frequency) Warning !! Adjust the handsfree to the right volume. Loud sound can damage your ears, for traffic safety, never use a headset when riding a bicycle or motorcycle, when driving a car, it is dangerous to increase the volume, too loud volume can hurt the ears. Pay attention to the traffic around you