1. Using earplugs does not require any skill. Take out two earplugs from the charging case, they will automatically connect, and then enter the phone's Bluetooth settings to pair the earplugs. 2. They are not easy to fall off their ears and remain stationary, making them ideal for sports, running, driving, exercising, going to the gym, relaxing, traveling, and more. (Note: The charging case is not waterproof.) 3. Bluetooth earphones are sweat resistant. Ergonomic in ear design. 4. Stereo music quality, excellent listening experience, powerful bass, and extraordinary details. 5. Noise cancellation technology can reduce environmental noise and echo, ensuring that you don't miss any part of the rhythm and enjoy music anytime, anywhere. Used for Christmas gifts, birthday/business gifts, and public holidays.