Wireless Bluetooth Headset Wireless Heavy Bass Cancelling Stereo Headsets Features: True wireless Bluetooth headset, surround sound surging bass, enjoy wireless stereo, shock bass, intelligent noise reduction HD call, HD noise reduction sensitive microphone, so that the noise is invisible, enjoy HD call HIFl big moving ring strong bass effect, 40mm large diameter sound unit, performance greatly improved, shock stereo sound, real live experience Comfortable to wear, close to the ear comfortable and soft, the ear muffs are made of protein material, which is softer and more on the of enhanced noise reduction, giving you a more comfortable experience Bluetooth 5.0, revolutionary technology upgrade, equipped with new Bluetooth 5.0 technology, realistic low power consumption, audio output, to ensure sound transmission stability and Both wired and wireless can be used, and the 3.5MM audio cable can be connected when the headset is out of power, even if the desktop computer does not have the Bluetooth function Product Description: Model L500 9 hours of listening time Battery capacity 250mAh Charging time is 2.5 hours Bluetooth Version Bluetooth 5.0 Bluetooth receiving distance 10M Product list: 1 headphones 1 x charging cable 1 x instruction manual