★ 【Warm Tips】The speakers has positive and negative electrode, the positive pole is marked a small dots of color, unmarked point is the negative pole, Please do not solder for more than three seconds. The welding time is too long. It is easy to burn the voice coil lead or directly burn the circuit board, causing the speaker to be short-circuited and Voiceless.
★ 【After Service】: WE CONTINUE TO develop more professional headphone accessories. Please contact us for replacements or refunds if there is an issue with your purchase.