Special Features:

Screen is 180x240 pixels, fits in shirt pocket, floats, 8mb map memory map or marine mavaid capable

Properties:

A fixed number of components and/or items, not all having the same basic name, of a ground or airborne navigation set that acquires and tracks signals from a constellation of orbital satellites to obtain time and three-dimensional position and velocity directly or in conjunction with sub systems of the host vehicle. Excludes stand alone navigation systems, such as inertial navigation set.