The length of the line is about 0.35 meters, and the number is relatively small. The designed pig mouth style and exquisite diaphragm are suitable for Bluetooth device use, and can also be extended with an extension cord. Bass, the vocals are sharper! ! !The collection is also of great significance. This unique short-term is very rare, and it has been in stock for a period of time. I hope it can bring him to the sky again. The analysis is good. The tuning of the old headphones is more powerful in an instant.