Feature: 1. EXCELLENT SOUND CATCH: Microphone preamplifier utilize audio amplification technology to ensure high fidelity and clarity of sound catch 2. FUNCTIONS AND EFFECTS: The preamplifier design can improve the sensitivity and signal to noise ratio of the microphone, suitable for various application scenarios 3. POWERFUL AUDIO AMPLIFICATION: The MAX4466 technology enable audio amplification capabilities to provide powerful sound output, useful and practical 4. EASY INSTALLATION: The electret microphone amplifier is easy to connect and use on your device, with no extra complicated steps required 5. WIDE APPLICATION: The electret microphone amplifier module is suitable for sound recording, speech recognition, noise detection and other fields Specification: Item Type: Electret Microphone Amplifier Material: Plastic Operating Temperature: -20℃ to 50℃ Product Size: Approx. 2 x 2 x 1cm / 0.8 x 0.8 x 0.4in. Package List: 1 x Audio Amplifier