Features:
1.Built-in high-precision ANC phase reversal noise reduction circuit,Effectively reduce 85% background noise
2.Noise reduction dedicated 40mm speaker,diaphragm use high-end corona material,fully reflect voice clarity and high quality.
3.Built-in 3.7V lithium battery
4.Two working modes optional,noise reduction mode & normal working mode.
5.Over ear,soft comfortable to wear long time.
6.Foldable design,4 kinds of folding way,easy to carry.
7.With plane plug,Can be used in entertainment systems in the engine room.

Specifications:
1.Category: Active noise cancelling headphones
2.Plug: Ø3.5mm
3.Working Voltage: 3.7V
4.Max output power: 90mW
5.Noise level: 18dB
6.SNR: 90dB
7.Power: 120mA lithium battery
8.Rated operating time: 20 hours
9.Noise reduction mode: dual microphone noise feedback Active Noise-Cancelling
10.Speaker Diameter: Ø40mm
11.Impedance: 32¦¸
12.Frequency Range: 20Hz - 20KHz
13.Sensitivity: 105dB
14.Cable: 1.5m TPE
15.Microphone: none