NOTICE:
If you purchase Sound Intone G830 Headphones from any sellers on Amazon other than AMAZON.COM or MUJI SHOP,you may buy the imitated products. All Sound Intone products come with 3 months Warranty and it is ONLY available when you purchase your headphones from Sound Intone AUTHORIZED SELLERS. Never fooled by Imitations especially with very cheap price!

The function of noise cancelling reach with two ways: 

1.active noise cancelling. used of chip inside,can block around 90%~95% noise; 

2.passive noise cancelling.used of closed-seal earmuffs to reach passive physical noise reduction function,block around 70%~75% noise. 

They are made by different material and different cost also. These G830 headphones `s noise cancelilng function is the passive one. 

Specifications:

Speaker:

Driver Diameter:40mm

Impedance：32ohm±15%

Sensitivity:105dB±3dB @1KHz

Frequency range:20-20000HZ

Rated Power: