Air tube radiation free earphone

1. Safe earphone 2. Exceptional function radiation free headsets

The new generation of mobile phones terminal can not go without earphones, as we need both read pictures and listen to music and watch videos when we spend more time on mobile phones. More and more people have realized the harm that the radiation of mobile phones can cause, so FC changjiang radiation-proof earphones are our best solution to them.

 

 

 

 

 1. Electret condenser microphone

Offset	4.5VDC        2.2Kilohm
Sensitivity	—42±3dB f=1KHz,spL=1Pa
Directivity	omni directional
Static impedance	1—2.2 Kilohm
Peak voltage	10VDC
Distortion	at 400Hz and 1kHz less 5%
Speech to noise ratio	morethan58dB

2.Horn

Sensitivity	114±5Db SPL/3Mw/5cm at 1KH
Range of frequency	20Hz—20KHz
Resistance	32Ohm±15%
Rated power	3mW
Capacity	5mW
Lead wire length	1-1.5m

Comparison with phones with no earphones

Data above shows that FC radiation proof earphones can reduce radiation by 2640 times!

Comparison with common and Bluetooth earphones

Data above shows that FC radiation proof earphones are 52.5 times less radiant than common ones and 16.5 times less than Bluetooth

Specifications above can be made as customers require.Specification All technical parameter can meet or exceed national standards

Patent Number granted by Germany: 20 2006 011 911.6, Patent Number of invention in China: ZL 2005 20042628.4PCT International Publication No.: WO 2010/043097A1

Air tube radiation free earphone