Remove any foreign matter attached to the O-ring groove using a lint- free clean cloth or cotton swab. Also remove any sand or dirt attached to the O-ring contact surface on the front lid of the case.
CAUTION : • Maintenance of the waterproof functions is required even before using this product underwater for the first time.
•When a mechanical pencil or a similar other sharp object is used to remove the O-ring or to clean the inside of the O-ring groove, the Case and the O-ring may be damaged and water leakage may be caused.
•When the O-ring is checked with the fingertips, take care not to stretch the O-ring.
•Never use alcohol, thinner, benzene or similar solvents or chemical detergents to clean the O-ring. When such chemicals are used, it is to be feared that the O-ring will be damaged or that its deterioration will be accelerated.
