high quality Long Distance Transmission and AmplifyingLeveraging advanced 2.4G wireless technology, the portable amplifier delivers remarkable long-distance performance. It has an amplifying range of up to 60m/196ft, ensuring clear sound across a wide area. The wireless distance between the amplifier and the microphone reaches 10m/33ft. This makes it highly suitable for various scenarios, effectively meeting the diverse needs of both professionals and amateurs.Large Built-in BatteryThe portable amplifier is equipped with an outstanding long-lasting battery. It can be fully charged in merely 2.5 hours and then ensures continuous operation for 8.5 - 10 hours. Additionally, its microphone can be fully charged within 1.5 hours and offers a usage time ranging from 5.5 to 7 hours. With such reliable power performance, you can count on it during your activities and won't have to worry about unexpected power failures at all, especially in crucial moments.Powerful Volume & Noise Reduction Enjoy powerful volume and high fidelity sound quality with our portable amplifier. The advanced noise reduction technology effectively filters out background noise, providing clear and pure sound. Whether it's a large classroom, a noisy outdoor environment, or a bustling event, this portable amplifier ensures your voice is heard loud and clear.Multiple Playback Modes Supports multiple playback modes, including Bluetooth connection, TF card playback, USB Flash Drive and AUX input. You can freely switch between different audio sources according to your needs, making it suitable for a wide range of applications, from personal use to professional settings.Wireless and Ultralight Design This clip-on amplifier comes with a wireless lavalier microphone. Thanks to the 2.4g wireless technology, it's ready to use right out of the box. Its ultralight design ensures comfort during long term use, whether you're a teacher in the classroom, a tour guide on the go, or a presenter on the stage. It's the perfect portable amplifier for various occasions.