E93 Sample Specifications    

Driver Diameter    40MM

Bluetooth version    5.2

Frequency Response    20Hz-20000Hz

Battery Voltage    5V±0.5V

Playing Time    9H

Charging Time    2H

Distance    10M

Largest Power    20mW

Sensitivity    110±3db

Battery Capacity    400mAh

Impedance    32 Ohm

Under the same appearance, noise reduction styles can be made