iSmart Bluetooth Wireless Headphone BX9

It is a 40mm neodymium magnet stereo field, High frequency sound, JL chipset support wireless 5.0,250mah battery gives 7hours music, Over ear design protect ears, Metallic Painting, LED light with on/off switch, Foldable easy to carry, Four key control, Wireless version 5.0, Input Rate: 5.0V -1A, Multi protocol wireless, Frequency responce 20Hz- – 20KHz, Impedance 32, Sensitivity 80dB.