About this item Immersive Sound QualityThese wireless earbuds feature a Woolen-paper-bio-diaphragm dynamic driver, delivering deep bass and crisp treble for a truly immersive listening experience. The enhanced acoustic design ensures more powerful, penetrating sound than ever before. 4 Mics for Clear CallsThese wireless Bluetooth earbuds are equipped with two microphones per ear, combined with ENC noise reduction technology, to ensure clear call quality. (Note: EQ/APP adjustment is not supported.) 40 Hours of Battery LifeThese earbuds provide 8 hours of battery life on a single charge and can last up to 40 hours with the charging box. When the earbuds are low on power, it only takes 10 minutes of charging to provide 1 hour of playback, meeting your usage needs at any time. Windproof Acoustic DesignThese true wireless earbuds are engineered with a fluid dynamics-inspired cavity structure; the windproof design effectively blocks out ambient wind noiseensuring clear audio even at speeds u