The watch contains a precision movement. Do not open the watch, or attempt to remove the case-back. Any and all work, including battery replacement, required within the guarantee period must be carried out by a certified watch technician or dealer. Do not expose the watch to extremes of temperature, or rapid changes of temperature. The watch is designed to withstand impact under normal use, it must not be subjected to severe impacts, or dropped onto hard surfaces. Keep the watch away from magnetic fields. Only clean the case with a soft cloth, moistened with water. Do not use chemicals, solvents or soap, as these can damage the seals and finish of your watch.