Founded in Shenzhen City, China, Korea Company VOISTA (HK) Co., Ltd. has earned a reputation for designing and engineering all sorts of Voice Amplifier. And our headquater company is Nexcon Technology Co., Ltd. The 6-year development history of Voice Amplifier is a story of passion and dedication to advanced performance which causes you to rethink the definition of excellence. The reliability, flexibility and performance of our innovative Voice Amplifier save your time and money by expressing your natural voice for effective and efficient personal or group communication. The followed showcase is the best verification of our items�¢ï¿½ï¿½ detailed specification, and you can also check our website: ***** to find those functions that interest you most. We have the confidence that your choice of our products will bring the most personalized satisfaction that you deserve. Sincerely hope we can take advantage of this valuable opportunity to make something in very near soon