1, the sound quality is good. qq music et4 1 adopts 1 1.8mm biological diaphragm and DSP noise reduction technology, which can provide clear and thorough sound quality and excellent noise reduction effect. Whether listening to music or talking on the phone, you can get a comfortable and pleasant experience.

2. The design is good. Compared with other similar in-ear Bluetooth headsets, et4 1 has exquisite and concise appearance, fashionable black-and-white color matching and intelligent touch design, which is very convenient to operate, so qq music et4 1 is good.