Review on 🔊 Black Retail-Packaged Digital Innovations Sound Dr Speaker Amplifier for Smartphones by Patrick Reid

For the money, an excellent device for hands-free calling with several people in the room. The tiny speakers in most phones simply don't have volume boost for comfortable listening. This device solves that problem and does it well. Cannot vouch for accuracy or lack thereof, can be used as an amplifier for music but for amplified voice conversations it is the perfect solution.