Teacher must haves: Bluetooth portable voice amplifier can be a thoughtful and practical gift for a teacher who frequently speaks in front of large groups or classrooms.35W powerful output could cover 10000 sq.ft,kindly recommend use this portable headset microphone speaker system indoors like classroom,it's plenty loud for a class of around 120 middle schoolers to hear you. Easy Pairing and Operation: Wireless voice ampliifer unit is very easy to pair with bluetooth headset microphone, just turn them on and they will be paired automatically.Operation is straight forward, even if you could without needing the manual Everybody can very quickly up and running. Long Battery Life: Portable voice amplifier built in 2000 mAh rechargeable battery that could get up to 7-9 hours of voice amplification on one charge, perfect for teachers and presenters. wireless microphone headset support 8 to 10 hours. Both them are be charged quickly with the included Type-C charger. Lightweight and Versatile: Bluetooth voice amplifier is lightweight to wear,it can be clipped to a belt or hung around the neck using the supplied neck strap.The bluetooth headset is lightweight and doesn't slide off head.Good think that wireless microphones come in two parts, it can also be used as handheld mic if anyone wants to use it that way. The headset comes apart very easily for storage. Affordable and Reliable: The Voice Amplifier is an affordable yet reliable personal amplifier/speaker that comes with a Bluetooth earpiece/mic, a belt clip and a lanyard.

• 【Long Battery Life】Built-in a rechargeable 3000mAh lithium battery. The long lasting battery life of 8-12 hours ensures that the voice amplifier can keep up with your demands throughout the day, and it takes only 2 to 3 hours to fully charge.
• 【Quality & FCC Certification】Our all-in-one voice amplifier set, including wireless microphone and amplifier main unit, has passed the FCC test and acquire the certification. Strict quality control ensures stable performance, strong anti-interference ability and safe use, bringing you a reliable using experience.

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