Simple Wireless Bluetooth Headset Active Noise Reduction

 Product information:

Speaker: Medium 14.2MM
Speaker impedance: 320
Speaker frequency range: 20HZ-20000HZ
Rated voltage: 3.7 V
Response rate: 94+3 DB
Talk time: S 8 hours
Charging time: 1-2H
Battery: 35 mAh
Rechargeable battery: 400 mAh
Control method: button

Packing list:

 earphone + USB cable