DIRAG Voice Amplifier, 30W Portable Bluetooth Speech Amplifier with Wireless Microphone Headset, Built-in 4000mAh Dual Lithium Battery, for Teachers, Coaches, Promotions, Tour Guide, Speech

VOICE AMPLIFIER: Delivering 30w clear and soft sound to cover about 20000 sq.ft (1000 ㎡), Amplifies your voice and saves your throat when you have a difficult time speaking loudly enough BLUETOOTH VOICE AMPLIFIER: Not only an amplifiers but also a portable Bluetooth speaker, you can stream your favorite music from any type of Bluetooth-enabled mobile device, up to 33 feet away LIGHT WEIGHT POWER BOX: You can take it to multiple locations such as classrooms, bingo calling and outdoors. A big help in speaking to 200+ members in your group RECHARGEABLE VOICE AMPLIFIER: Built-in a 4000mAh big lithium battery allows the microphone speaker to only take 3-5 hours to fully charge, but plays up to 20 hours of amplify time and up to 10 hours of music playtime ADJUSTABLE MICROPHONE HEADSET: You can adjust the distance between the microphone and your mouth with the flexible gooseneck. Comfortable design for your teaching, training, presentations and other activities