Sanag T40 Bluetooth 5.3 earphone wireless TWS headphone

Bluetooth version:5.3 

Bluetooth distance:10m 

Frequency response:20HZ-20kHZ Output sensitivity:-85DB

Earphone battery capacity:32mAh*2

Charging case battery capacity:400mAh

Charging times:2.5 times

Earphone charging time:about 1 hour

Charging case charging time:about 1.5H

Music playing time:8 H