The range of this active noise reduction frequency is between 50Hz to 2000Hz. it can suppress noise above 25dB. Therefore, it is suitable for metro, bus, high-speed rail and office…etc. What’s more, it can cancel most of low frequency noises effectively without ear pressure.Unique acoustics architecture and high precision assembly makes whole structure very solid so that overall bandwidth is more extended, low distortion and light weight.

This earphone is made by new titanium plating technology. It greatly increases the hardness of the surfaces without increasing its weight. Also, prevent from been scratched and frict by daily uses. Also it has the advantages of corrosion-resistant and non-fading.

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