TRS

Acoustic couplers; Adapter rings for attaching objectives on cameras; Calculating machines; Capacitors; Electric wires and cables; Electronic regulating and control devices for the operation of light emitting diodes; Geiger counters; Indicator lights; Lenses for astrophotography; Light emitting diode (LED) displays; Magnetic-tape recorders; Microphones; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Phonograph records featuring music; Phototelegraphy apparatus; Portable media players; Surveying machines and instruments; Variometers