Small but very powerful -- If you are looking for a personal voice amplifier that is small and lightweight, then the S17 is right for you. It is a portable microphone speaker with 30 watts of power, which can clearly amplify your voice and protect your vocal cords, so you can easily make your voice heard by 25 to 100 people. Standalone battery life -- The small voice amplifier has a high-capacity 2200mAh rechargeable lithium-ion battery that provides up to 12 hours of operation from a fully charged battery. Charging is easy via an included USB cable. And it only takes 3-5 hours to fully charge. Convenient and portable -- The portable speaker comes with an adjustable strap that you can use to tie around your waist or hang around your neck. The teacher speaker amplifier has a clip on the back, you can attach to a belt or waistband. The wired headset microphone is adjustable. Stable performance -- It is an original voice amplifier with stable performance. The portable headset microphone is a flexible gooseneck design that is placed directly near the mouth. Perfect for anyone doing events and needing to project their voice. Suitable for teaching, trainers, singers, coaches, guides, shopping malls, presentations, yoga, outdoor speeches, etc. size 8.4*9.2*2.8cm

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