Acoustic couplers; Cameras; Coaxial cables; Computer peripheral devices; Connections for electric lines; Couplings, electric; Data processing equipment, namely, couplers; Electric cables; Microscopes; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Optical condensers; Optical lamps; Optical lenses; Shutter releases; Spectroscopes; Wire connectors; Wires, electri...