Sanag Z30s TWS earphone open ear air conduction Bluetooth 5.3 wireless headphone

Bluetooth version:5.1 

Bluetooth solution:JL 6983D4

Bluetooth distance:10m

Frequency response:20HZ-20kHZ

Output sensitivity:-85DB

Earphone battery capacity:80mAh*2

Charging case capacity:400mAh

Charging case charging time:2 times

Earphone charging time:about 2 H

Charging case charging time:about 3 H

Music playing time:10 H

Single headset weight:8G

Charging case weight:45g