Rechargeable Speaker Built-in a 2800mAh big lithium battery allows the microphone speaker to only take 3-5 hours to fully charge Plays up to 12-18 hours of amplify time and up to 8 hours of music playtime. Microphone will take 2-4 hours to fully charge.
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Bluetooth vocie amplifier A speech aid - lightweight hands free compact Voice Amplifiers attached to a belt. The use of a voice amplifier improves the learning and the teaching experience, improves communication and increases effectiveness of classes, lectures, meetings, sales presentations.
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TF card/USB Disk Support Portable Voice Amplifier is also called "Waistband Amplifier" or "Speech amplifier". During TF card/USB Disk mode, you may play the music/ keep the record on your needs. Please make sure the TF card/USB Disk is insert before the recording.
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