The sound quality of the earphones is good and there is no noise. The signal is super stable. When you wear it with both ears, you can listen to music with a three-dimensional feeling. There is no noise or current sound. The sound insulation effect is also very good, and there is a very nice small charging compartment. The sound is clear, the price is affordable, and it is much better than expected. The battery life is also very long, which can be said to be satisfactory for this price.