Headphones

1.Active Noise Cancelling: -30±3dB
2.Bluetooth 5.0
3.Speaker: 40mm
4.Transmission Frequency: 2.4G～2.48G
5.Transmission range: ≥10 meters
6.Charging voltage: DC 5V
7.Charging time: about 1 hours
8.Talk time: about 30hours
9.Music time: about 30hours
10.Standby time: more than 400 hours
11.Battery: 500mAh
12.Noise Reduction Frequency Range: 40~600Hz
13.Noise Reduction Central Frequency: around 100Hz~1000Hz
14.Pure Monster Sound