The sound quality is average, one pair is good and the other pair is poor. It is suspected that the two earphones are OEM products. The boot mode and boot sound of the two earphones are different. There is a current sound during charging. One of them is not fully charged.

High cost performance, poor noise reduction, lack of three tone resolution, good bass, easy to carry, easy to use

The sound quality is OK, the signal receiving ability is serious. The left and right pockets of the phone's pants are often broken when plugged, and the back pockets are directly disconnected when plugged

The reception ability is too poor. The phone is tossed in the hand or the left and right pockets of the phone's pants are often broken when plugged, and the back pockets are directly disconnected when plugged