FOREMOST is the leading supplier and manufacturer of car stereo bluetooth microphone and 2 earphone connector that are manufactured under strict standards. We have many professional instruments to achieve continuous improvement of products through statistical analysis. To offer flawless products, we continue to strengthen in-line quality control in particular, coupled with intensive personal training. FOREMOST has more than 50 years of experience in manufacturing all kinds of car stereo bluetooth microphone and 2 earphone connector , you can get it all in FOREMOST.