1.100H Play Time: Our Bluetooth neckband earphones have a large-capacity battery that allows you to listen continuously for 100 hours. Type-C port is for charging. Widely compatible with mainstream smartphones. 2. Call noise reduction: The neckband earphones adopt a noise reduction microphone, and the sound is clearer during calls as the outdoor noise is reduced. You can enjoy high-quality calls on the street and use it with all your mobile phones. 3. Adopting Bluetooth 5.4 technology: smooth transmission without delay, low power consumption, wide compatibility, and the signal will not be cut off even on a crowded subway. Provides stereo sound and first-class high and low bass. The sound is great. The wireless neckband earphones have a built-in microphone for receiving voice notifications. 4. Ergonomic design: The earbud neckband adopts a comfortable semi-fitting design, which is painless to wear for a long time and very comfortable to wear. The waterproof performance reaches IPX7, which is waterproof and not afraid of sweat. Very suitable for running, cycling, fitness, jogging and other sports. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store