Which is better, San 'ao or Liweilang Bluetooth headset?

Liweilang Bluetooth Headset. All right. Liweilang is a brand of Shenzhen Ai Xiang Technology, which is committed to developing innovative, practical and valuable digital products. Liweilang Bluetooth Headset adopts the design of mixed sound quality of double moving iron and moving coil. Compared with the dynamic design of the Olympic bid, it is more prominent in low frequency, while not ignoring the clarity of high frequency.