10 different colour screen filters for modding digital watches. This pack of filters provides enough material to modify 20 Casio F-91Ws or 10 Casio Royales (AE-1200WHD). - High grade optical filters with superb clarity. - Each filter is approx. 30mm x 30mm. - Filter Thickness of 0.3mm: Extra strong, for quality mods. - Double-sided protective film: Our filters have protective film on both sides, so no marks or scratches. Just remember to peel off the film when you start modding. These filters can also be supplied with a classic Casio F-91W, to start your modding journey. Happy modding! :)