This set of 2 “O” ring gaskets are specifically designed to provide a reliable seal for the case back of your watch. They are compatible with any brand that uses “O” ring gaskets and fit watch cases with diameters between 12mm and 30mm. These gaskets are manufactured by 1STOP and come with a 2-year warranty. They are an essential component for keeping your watch water-resistant and protected against dust and other particles. Get this set of three gaskets with 1st Class post for your watch repair needs.

 advised to change when changing the battery 

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