| http://www.w3.org/ns/prov#value | - the scuba f-3 expands the field of perifery visionless time spent looking to the side to locate diving buddy. after multiple dives over consecutive days the mask presented uncomfortable pressure to the base of the nose. this may not be a function of the mask as other divers using other types of mask experienced the same pressure. water seal worked well. fogging was an ongoing problem even after us
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