An optical lens device assembly containing an optical lens device and an optical device sealed without causing complication of optical module configurations is provided. In certain embodiments, the hook prevents product \u201csweeping\u201d and also delivers a time-delayed delivery of product per hook. The cavity includes an outlet for flow or aspiration of liquid, an opening opposite, and, below each orifice, a directing device to guide the liquid towards and under each orifice, as far as the outlet, in such a way that liquid flows across the earpiece. The first end face fitted with the contact plate is formed with a circumferential slit portion which connects to the slit portion. The satellite device transmits the one or more encryption key symbols to multiple nodes of a land-based network using quantum cryptographic mechanisms. In this way, excess energy caused by longitudinal resonance at higher frequencies is radiated transversely through the port tube walls rather than contributing to the output of the loudspeaker itself.