• Chip: AB5756C

• Bluetooth 5.4, distance more  than 10m 

• Speaker: 16ohms electric 1509,30mW

• Microphone: Silicon microphone

• Lithium Battery with protection : 80 mAh +80 mAh

• Music playing time: about7 hours    

• Functions: Play music,  phone calls,  Polarized sunglasses,  HIFI sound quality,  AI conversation