On July 21, 2003, some astronomers provided evidence from recent discoveries of giant extrasolar planets in
mostly inner orbits around host stars that planetary systems may be more common around stars whose spectra show an enriched
abundance of elements heavier than hydrogen and helium — also called high «metallicity» (exoplanets.org press release; and Gonzalez, 1999).
The only limitation
on calls via the Galaxy Gear is the same that applies to any speakerphone call: the lack of privacy and
abundance of noise in public situations dictate that you'll
mostly be using this function in more secluded areas.