Portable Amplifier (Hands-free, Small, 20W) Sanwa Supply 400-SP043 This is a hands-free amplifier that is portable and can be worn around the neck or attached to a belt. It has a high output, so you can use it with a loud voice. It is ideal for guiding large groups of people or giving presentations. Please be aware that raising the output may cause feedback depending on the microphone's position. Please note that the red indicator lamp will blink when charging the main unit if it is already fully charged. Contents: Main unit (rechargeable) Charging adapter Hands-free microphone Instruction manual (printed) General-purpose soft case USB cable External microphone cable I used it once and then stored it. I have confirmed that it works. It is not new, as it has been stored, so I will sell it at a low price to those who understand. I'm sorry, but I cannot offer a discount. #Amplifier #HandsFree #SanwaSupply