Voice Amplifier for Teachers: SHIDU 18W Portable Megaphone with Wired Mic Headset, Waterproof IPX5 & 4400mAh Battery

1. The 18-Watt Voice Amplifier provides an expanded sound coverage of up to 400 yards, suitable for an audience of 400 people. With an adjustable volume, it can amplify your original voice clearly, without any noise, distortion, or interruption.

2. The Rechargeable Voice Amplifier features a built-in 4400mAh lithium battery, allowing for up to 12 hours of amplification time and music playback. It can be fully charged in just 3-5 hours, and can also be used as a rechargeable battery to charge your other devices while you're outdoors.

3. The IPX5 Waterproof Design of the Amplifier protects it from gentle water sprays and splashes. The smooth, anti-fingerprint fabric exterior with a rubber casing safeguards the speaker system from scratches and impacts, making it ultra-portable for a variety of outdoor activities, such as travel, hiking, beach, pool, and bathroom use.

4. The Multifunctional Microphone Amplifier supports TF (Micro SD) card playback, USB flash drive playback, and 3.5mm AUX audio input (the microphone port can be used as an AUX port). It also features recording, loop playback, and Bluetooth 5.0 connectivity, allowing you to connect it to your cell phone's Bluetooth 5.0.

5. As a Warm Tip, it is recommended to keep the speaker and microphone at a distance and facing away from each other to avoid signal interference. Additionally, the product comes with a Worry-Free Warranty, offering a 30-day return and refund policy, as well as 12 months of free repair and replacement services.

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