Product size: 66*43*35mm  

Product weight: about 4.2g for earphone / 60g for charging case  

Waterproof specification: IPX4-level waterproof for earphone   

Bluetooth version: V5.0  

Bluetooth protocol: HFP HSP A2DP AVRCP  

Effective distance: 10M (barrier-free)  

Audio decoding: AAC/SBC  

Speaker specification: 10mm composite diaphragm  

Frequency response range: 20HZ-20KHZ  

Endurance of complete unit: about 20 hours  

Endurance of earphone: up to 4.5 hours  

Charging time: 1.5h for earphone and 2h for charging case