One feature helps Iqua’s option stand out from the speakerphones we’ve previously reviewed. Unlike any prior unit we’ve seen, Vizor Sun includes a solar panel on its face, a feature that Iqua claims offers “unlimited talk time” under “optimum lighting condition[s]” by using the sun to recharge the unit’s integrated 20-hour battery. In order to use this feature, you’ll need to either turn your car’s…
