Calculating machines and data processing equipment; Car video recorders; Electrical and electronic burglar alarms; Global positioning system (GPS); GPS navigation device; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Pressure gauges; Radar apparatus; Refractometers; Satellite navigational system, namely, a global positioning system (GPS); Tire pressure gauges