The DTR550 digital radio works wherever people do. Reporting from the production line or the principal's office, they'll enjoy expanded in-building coverage that's 20 percent greater up to 325000 square feet with the stubby antenna and 350000 sq. ft (or 30 floors indoors) with the standard extended whip antenna. They'll also benefit from digital audio quality that stays loud and clear, up to the edge of coverage, without static or dead zones. Plus they'll get 45 percent longer talk time up to 19 hours with the extended capacity battery all from a single charge.