Ujjdwiurgh Black Waterproof Mini Speaker Waterproof Mini Amplifier Microphone Speaker High Way Audio for Outdoor

4.Applied to all monitoring place such as bank, school, prison, hospital, marketplace, factory and meeting system. 3.low noise, high fidelity, wide operating voltage, low power dissipation and long transmission distance etc. 2.Connect with the audio matrix, long delay recode, recorder and professional monitor directly. 1.Sound pickup use the high fidelity and low noise process chip. After multiple times frequency 5.the sound pickup is the best choose for the TV monitoring and safety system.