Material: ABC + PC 

 Bluetooth Solution: Bluecom AB5756C                        

Bluetooth Pairing Name: SG 

 Bluetooth version: 5.4 

 Charging port: TYPE-C 

 Headphone Speaker Material/Specifications: 16 Ohm Dynamic 1509 Speaker 

 Speaker power: 30mW 

 Microphone: Silicone Mic 

 Built-in battery: 3.7V 80MA*2 battery with protection board 

 Battery model: 400737 

 Transmission distance: > 10m 

 Call duration: >4 hours 

 Playback duration: 7 hours 

 Prompt sound: English