Retekess PR16R Portable Voice Amplifier High Power with Microphone 210mm Dovetail Plate CCD Astrophotography: Very good –

CCD Astrophotography: Very good – optimal suppression of light pollution

you don't have to worry about the device running out of power

The call button can be installed on the dining table

Low-power indication

Retekess PR16R Portable Voice Amplifier High Power with Microphone 210mm Dovetail Plate CCD Astrophotography: Very good –Retekess PR16R Portable Voice Amplifier High Power with Microphone. The voice amplifier with a microphone Both the amplifier and the headphone is lightweight and comfortable. The headphone is comfortable on the head in the microphone is adjustable to the mouth Good sound quality The sound quality made it really great for large groups of up to 50 people and walking around indoors within 20 meters, the sound can be clearly transmitted MP3 player If you