Active Noise Cancelling (ANC) headphones can reduce sound that could interfere with your listening such as traffic， conversation， aircraft noise etc by means of active noise reduction circuitry. This normally uses small microphones which are located inside the headphones. The signal from these microphones is inverted and used to generate a noise from a speaker driver in the headphone which in theory should cancel out any unwanted noise present. ANC is used mainly to cancel out lower frequency unwanted sound. It can\'t completely isolate all the external voice.
Our product is professional active noise cancelling headphone，which is special design for reduce 50-1000Hz low frequency noise.
2016 Newest version will come with microphone， support remote control.
Features:
1.Built-in high-precision ANC phase reversal noise reduction circuit，Effectively reduce 85% ambient 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: 32Ω
12.Frequency Range: 20Hz - 20KHz
13.Sensitivity: 105dB
14.Cable: 1.5m TPE
15.Microphone: yes
16.N/W: 175g
Product Content(without retail box):
Active noise cancelling headphones × 1pc
Portable bag × 1pc
USB charge cable × 1pc
Airline adapter × 1pc
About shipment:
1， Please make sure your shipping address before purchase， item will send to Register address ONLY.
2， All items will be check carefully before sending out.
3， Shipping & Handling fee is non-refundable in all circumstances.
4， Our prices do NOT include any custom duties or tax.
Terms & Conditions:
1， Unless the items are completely defective， we are not providing any refund or exchange， please contact us for any exceptional case.
2， Defective item must be returned not more than 7 days after you received the item， you will not be charged any shipping & handling fee for re-shipment.
3， In case of missing parts， please notify us no later than 7 days and we will arrange the relevant parts.
4， Please contact us if you are not receiving the item after the expected schedule and we will investigate it.
5， In order to well understand what you are purchasing， we are willing to answer any related questions， please do not hesitate to contact us!
Feedback & Contact us:
1， We are always working hard for maintain high standard of excellence and strive for 100% customer satisfaction. So your 5 STAR Positive feedback is very important to us. We are kindly request you to contact us immediately when you have problem or if you want to give us neutral or negative feedback， Please contact us!!!
so that we can collect your idea to make our service better and better， and welcome you back to our store again.
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3， We greatly appreciate your positive feedback and we will promptly do the same to you.
4， Wholesaler， Retailer and distributor are welcome. Please feel free to contact us.
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