The portable hearing tester can be connected to a mobile phone using Bluetooth and can be adapted to the mobile phones of most mainstream brands in the market.With the test frequency band in the system are divided into 7 points of 125Hz,250Hz,500Hz,1000Hz,2000Hz,4000Hz,8000Hz,and the test intensity level is from 15dB to 90dB.The Portable Hearing Tester is a portable daily tool,with a data acquisition terminal,for monitoring hearing.We believe that hearing test should be as fast and convenient as measuring blood pressure and blood sugar.