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is the identification code for a specific Japanese adult video (JAV) title from the S-One studio.
SSIS-984 4K is a high-definition video standard that offers an unparalleled visual experience. The "SSIS" in SSIS-984 stands for "Super Stable Image System," while "984" refers to the resolution of 9840 pixels (horizontal) x 4320 pixels (vertical). The "4K" in SSIS-984 4K denotes the ultra-high definition (UHD) resolution, which is four times that of 1080p Full HD. SSIS-984 4K
As of the current release cycle, is available in two primary formats: is the identification code for a specific Japanese