One is the sound quality, the second is noise reduction. Good sound quality and less noise can also reduce damage to our ears. Bluetooth headset requirements than our sound requirements are much higher, because we use Bluetooth headset frequency can be far greater than the frequency with the sound.

In a riot, such as the market, shopping malls, large-scale entertainment venues, if the headset does not have the effect of noise reduction, in fact, and we do not use headphones no difference. Today's Bluetooth headset to active noise reduction function development, with noise reduction function of the headset is more expensive, the cheapest around hundreds of yuan, ordinary users are no one with such expensive headphones. These noise-cancelling headphones on the surface and ordinary headphones there is no big difference, but in the communication can be seen clearly, in a busy downtown can obviously separate the noise, so that we can clearly hear each other's voice.