Product of very poor quality, heavy oxidation on the rings to suspend the pump then the whole pump is contaminated, oxidation has the effect of blocking the piston in the rubber body and thus opening the release piston at all well ten days and it's getting worse, repression of twelve meters no problem when it is not blocked. The JAGO24onlin-FRANCE site and the Aqua-marine should be avoided, both incompetent companies in all areas. CAUTION scam in sight.