The Astro 320 improves user interface with a simpler menu structure and sophisticated graphics thanks to its vibrant, sunlight readable 2.6" color display. The device features a built-in worldwide base map with shaded relief plus support for enhanced mapping such as BirdsEye? satellite imagery, Topo maps, and Garmin custom maps. This rugged handheld also has a built-in vibration motor to support silent alerts, a 3-axis digital compass, and onboard memory for storing additional mapping The Astro 320 handheld will be targeted as an upgrade option for existing users of the Astro 220. The Astro 320/DC40 bundle will also include a new extended range antenna for the Astro 320. Full backwards compatibility is offered with existing dog collar products (DC?20, DC?30 and DC? 40) and most current accessories.