TRN

1. Closely fit and isolate noise. 2. The memory cotton is heated by different temperatures of the human body, and the shape will change, so it is more suitable for the contour of the ear canal, which...

1. Single-strand 25-core, the probability of loss of sound signal is greatly reduced, and the sound quality is improved immediately. 2. The sound is delicate, natural, full and round, and full of...