pf777AKTISIL PF 777 is a SILLITIN Z 86 coated with alkyle silane. Brand: AKTISIL Functions: Filler, Pment. Chemical Family: Calcium Salts, Silicon-based Compounds. Compatible Polymers &PF777 WINDING Your watch automatically self-winds when you wear it. To become fully wound, it must be worn for at least 12 hours. This may vary depending on the type of user. If the watch