features True Wireless (TWS) BT 4.1 Technology, built-in high-grade microphone and speaker, hands-free function and lightweight design. A great companion for your daily life, office time, driving or travel. Features: TWS BT Design: Wireless dual ear stereo design, left and right ear channel separation. You can use the headset solely, or used them in pairs. Lightweight Invisible: 5g lightweight, mini size and 3 sizes of earcaps provide you long time wearing comfort, and guarantees stability when doing sports. Noise Cancellation: CVC6.0 reduces ambient noises and grasps the detail of voice. Built-in Mic enables to answer or make hands-free calls. Multi-point Connection: Can simultaneously connect to two smart phones, switching between your business and personal phones, convenient to use. Long Battery Life: 55mAh battery in each headphone ensures 2-3 hours of working time. Powered by an included charging cable via the charging port.