Aerometers; Filters for non-medical respiratory masks; Life-saving capsules for natural disasters; Life belts; Life buoys; Life jackets; Life nets; Life saving rafts; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Optical glasses; Optical lens sights; Optical lenses; Optical condensers; Optical or telescopic lens sights; Prisms for optics purposes; Protecting m...