Camcorders; cameras; sound recorders; radios; image recording devices; time recording devices; radio detection and ranging (RADAR); radar detectors; computer software; computer software for planning route; personal computing devices; network cards; local wireless network cards; hand-free handsets for navigational devices; holders for navigational devices; belts for fixing navigational devices; covers for protecting navigational devices; satellite navigational system, namely, a global positioning system (GPS); auto-electronic navigational system; satellite global positioning receivers; navigational system for tracking and tracing vehicles and ships; portable multimedia players; multimedia players; digital media adaptors; sensors having wireless radio transmission capability for transmitting data; pedometers; speedometers; altimeters; barometers; directional compasses; velocimeters; stabilizers; gradient indicators; software and apparatus for measuring distance; software and apparatus for finding location; software and apparatus for measuring altitude; software for measuring speed; software for indicating direction