The SD2 Voice Amplifier is a smartphone application that reduces your muffled mask voice and allows you to be heard loud and clear!
Also use SD2 for public speaking with a Bluetooth speaker and for amplifying your voice if you have a medical condition that stops you from speaking loudly!
Also use SD2 for public speaking with a Bluetooth speaker and for amplifying your voice if you have a medical condition that stops you from speaking loudly!
Show More
