If you want to purchase a personal voice amplifier in size and lightweight, the voice amplifier is located on the ground. This portable microphone speaker has 15 watts of output power. It can clear the voice and protect the vocal cord, so it can be easily reached. Small voice amplifier for 20 to 65 people. Large capacity 2,200 mAh rechargeable lithium-ion battery allows you to fully charge the USB cable for up to 12 hours on a full charge. This portable mini speed amplifier includes an adjustable waist/neckband for free portability. Portable microphone with speaker is not only a teachers voice amplifier, but also a music player. Play music through TF card/USB flash drive, or add value to the speaker with music FM radio and recording function of Bluetooth devices via AUX input via Bluetooth and non-Bluetooth devices. STABLE PERFORMANCE - Raw v stable performance oice amplifier portable headset microphone is designed with flexible gooseneck that sits just close to your mouth. Perfect for people who are active and need to make sound. Suitable for teachers, coaches, travel guides, meetings, songs. Specifications: Material: ABS Power Output: 15WB Battery Capacity: 2200mAh Charging: DC 5V, 500mA Charging Time: 3-5 hours Size: 115 * 86 * 35mm Color: As shown in pictures Package Contents: 1 Portable Speaker (other accessories are not included) Due to lighting and computer display differences, we cannot guarantee the actual color 100% guaranteed. Due to the different measurement methods, there may be 1-2cm deviation.