About this itemREVOLUTIONARY DIGITAL TECHNOLOGY: The rechargeable feature the latest digital technology. This advanced technology enables the devices to bring back natural sound to the, restoring the clarity of everyday life. Additionally, the upgraded chip effectively handles background, allowing users to clearly even in environments. With minimal whistling and feedback.INVISIBLE & COMFORTABLE DESIGN: These are ergonomic in design lightweight, and nearly invisible, ensuring a comfortable and discreet wearing experience. The device fits securely in the canal, eliminating worry of them falling out or getting lost. Its soft and comfortable construction provides a natural and comfortable fit. The lightweight portable charging carry case adds to the convenie.