Life Note Wireless Earphone used fast-charging technology. A single charge gives you a full 7 hours of listening, while the charging case extends that to 40 hours. Besides, 4 Microphones with beamforming noise reduction and cVc 8.0 technology for superior vocal enhancement and background-noise suppression. This ensures your voice is heard clearly on the other end—without interference. In particularly, Life Note’s graphene drivers oscillate with extreme precision to give your music a wider soundstage with exceptional accuracy and clarity across the entire frequency range.