The JR04 bone conduction wireless earphones are an advanced product equipped with a charging case for extended battery life. With Bluetooth 5.3 technology, they ensure a stable and continuous connection, offering a more reliable and uninterrupted calling experience. The unique bone conduction technology of these earphones allows sound to be transmitted through bone vibrations, eliminating the need for insertion into the ears and providing a whole new audio experience. Whether you're engaged in outdoor activities or everyday use, the JR04 earphones deliver exceptional sound quality with clear, crisp tones and rich bass performance. In addition, they come with a built-in microphone for clear and stable phone conversations without any interference. The JR04 bone conduction wireless earphones not only boast a stylish design but also offer outstanding functionality to satisfy your passion for music. Whether you're jogging, working out, or simply relaxing at home, the JR04 provides an extraordinary music enjoyment. In summary, the JR04 bone conduction wireless earphones offer excellent sound quality, stable connectivity, and impressive battery life, making them a worthy choice. Whether for personal use or as a thoughtful gift for friends or family, the JR04 will provide an unforgettable music experience.