The K20 Bluetooth earphones adopt Bluetooth 5.3 technology and come with a mini charging case for easy portability. The charging case also features a battery level display function. The mini earphones are comfortable to wear and have a long battery life. They provide excellent sound quality and stable connection, allowing you to enjoy high-quality music and calling experience. Convenient to carry and wirelessly free, the K20 Bluetooth earphones are your ideal audio companion.