In any mechanical watch, Water entering the housing has a severe negative impact. Short term effects may be lost timeliness and long term effects may be corrosion and permanent irreversible damage to the movement inside.
For this reason, all Bissmarck watches rated to be used in water are tested for water resistance several times during assembly and are equipped with double seals around the crown, the most common point of failure in water resistance.
Regardless of our zealous efforts to make our watches resistant to water we recommend all our customers to minimize using their watches in water if practically possible, for example when showering. The reason for this precaution is primarily based on user handling after delivery, for example having not tightened the crown after adjustment or lack of regular service making rubber seals go old and worn.
As any watch will fail in water resistance tests at various depths and when subject to impacts etc., NO watch is "waterproof" (avoid this term) but display various levels of water resistance. Bissmarck adheres to the international standards in classification of our watches:
ISO 2281 water-resistant watches standard
ISO 6425 divers' watches standard
For additional information, please visit the following internet site: http://www.iso.org/iso/home.htm
Bissmarck will not be held responsible for any claims relating to damage by water since all our watches are carefully tested (corresponding wet test and vacuum test) several times prior to delivery.