ANC : 20db

Bluetooth version： V5.0

Frequency range ： 2.4GHz-2.48GHz

Transmitted power ：Class 2

Working Range ：Around 10m

Charging Voltage ：5V 0.5A

Operating voltage ：3.7V

Standby current ：<10uA

Music time ： up to 15H

Talk Time：up to 15H

ANC on only : up to 40hours

Standby Time ：>200H

Charging time ：<.2H

Speaker ：Φ 40mm/32Ω

Output power ：>8mW

Output Frequeney ：40Hz-20KHz

Battery : Built-in lithium battery 400mA