SHIDU Mini Voice Amplifier Portable Rechargeable Bluetooth Speaker with Wired Microphone Headset 10W 1800mAh PA system Supports MP3 Format Audio for T

? Easy to Use Operation is straight forward - just plug in the headset and turn the speaker on. ? Small & Lightweight You can wear this mini voice amplifier around waist or hang it on neck with the help of a waistband. ? One of The Best Things It could work well for elderly who cannot project their voice, keep them socially involved. And good for the one who is having trouble with their own vocal volume. Supports Bluetooth USB Flash Drive TF card. Specifications: Max output power: 10W Output Impedance: 4? Charging voltage: DC 5V 500mA Music-play time: 6-10 hours Frequency response: 90Hz-18KHz Work temperature: -10?-45? Amplify time: 8-12 hours Charging time: 3-5 hours