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English: This Russian diving mask instruction clip indentifies on the front the manufacturer (RTI), the product ("Neptune" rubber underwater swimming mask) and the USSR/CIS standard (GOST 20568-75).
There are instructions on the back for storage and use of rubber underwater swimming masks:
Purpose: Sea and freshwater swimming.
Storage: Store in packs in premises with ambient temperature from 0 to 25°C at least 1 metre from heat-radiating appliances. Do not expose to direct sunlight, oil or petrol. Do not hit against hard surfaces. Do not drop.
Directions for use: Check all parts are complete, wash mask body and glass with soap and water and adjust head strap for size. After a swim, dry off or wipe mask with a cloth.
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