features advanced true wireless (TWS) BT 4.2 technology, built-in high-grade microphone speaker, hands-free function and lightweight design. It will offer you amazing experience; you can greatly enjoy your favorite music when doing sports. Features: [Advanced BT Technology] Latest true wireless (TWS) BT 4.2 technology ensures transmitting strong signal in high quality high speed and offering high-fidelity stereo music. [Unique Design] Wireless dual ear stereo design, left and right ear channel separation; you can use its Left and Right Ear Headset solely (Single Track Mode), and it also can be used in pairs (Stereo Mode). [Emergency Power Supply] There is a 700mAh charging box, which can be used as a portable power bank and offering power supply to the BT earphones when in urgent need. [CVC 6.0 Noise Reduction] Adopt the advanced CVC6.0 active noise-cancellation, and built-in superior HD microphone, it can provide clear and loud sound, so that you can easily free you hands to answer calls. [Multi-point Technology] It can simultaneously connect two smarts phone. So you can seamlessly switch between your business and personal phones.