Even though you may see slight gaps around the buttons on the handle, don't worry–the handle is sealed. Water will not penetrate under normal operating conditions. However, take care when cleaning and do not insert sharp instruments into the gaps to clean them. Doing so may result in compromising the watertight seal and allowing water to enter into the interior of the handle.
Please follow the cleaning instructions found in the “Cleaning and Maintenance” section of the FAQs.