Sanag Z36s Open Ear Air Conduction TWS Earphone Bluetooth 5.3 Wireless Headphone

Bluetooth Version: 5.1 

Bluetooth solution : JL 6983D8

Bluetooth distance: 10 meters

Speaker: Φ10mm

Frequency Response: 20 Hz - 2 0 K Hz

Output Sensitivity: -85dB

Earphone battery capacity:35mAh*2

Charging case battery capacity: 400mAh 

Charging compartment charging times for earphones: 2 times

Earphone charging time: about 2H

Charging time of charging box: about 3H

Play music time: 7 H