The wireless amplifier and speaker are equipped with advanced wireless transmission technology chips, ensuring clear sound quality and stable connectivity. They come with two magnetic wireless lavalier microphones that connect automatically upon startup, offering convenient use.This Bluetooth voice amplifier uses high-fidelity sound technology to deliver clear, distortion-free audio. Even in a classroom with over 100 students, it protects your voice and ensures clear communication.This multi-functional voice amplifier is built with a 2600mAh rechargeable battery, offering up to 12 hours of battery life when fully charged. This compact amplifier and microphone ensure you can use it for extended periods without worrying about battery life.This is a comfortable and portable amplifier and speaker, weighing 0.5 pounds, equipped with a wireless lapel microphone, eliminating the need for traditional ear-mounted microphones for a more convenient user experience.This is a noise-free and clear speaker and microphone that supports USB drives and can connect via Bluetooth to computers, smartphones, and tablets, making it an ideal choice for teachers and mobile presenters.