As a competitor to the Contour Design SurfaceSound Compact and similar visor-mounted Bluetooth speakerphone devices, Iqua's Vizor Sun ($100) has a novel addition: a solar panel that enables it to recharge its integrated 20-hour rechargeable battery. Possessing the same magnetic mounting clip system we've previously seen on BlueTrek visor mounts, as well as a USB-based car charger for times when the sun's not out, Vizor Sun uses Bluetooth 2.0 and supports…
