Deep environmental noise cancellation, accurate call pickup, and a bidirectional 4-mic array. Up to 6 hours of listening time on a single charge, and a maximum of 21 hours of listening time overall. BT 5.3 flagship chip, fast and continuous connection, and much enhanced anti-interference capability. With its large diameter and lightweight design, this 13mm titanium diaphragm dynamic speaker produces lossless audio, clear treble, and powerful bass. With a single earphone weighing only 3.2g and a lightweight half-in-ear design, wearing these headphones is painless and comfortable. seamless transition between monaural and binaural modes, two-way transmission technology. IPX4 waterproofing makes it easy to protect against rain, sweat, and splashes.