... insertControled by micro computerProgram set18 sectionsMemory5 programs for 18 sections, 22 programs for 9 sectionsFeed range0.4~3.6mmAuto ... type: Z for zig-zag, K for overlock, and C for coverstitch3, Feed width (max): 38 for 38mm, 64 for 64mm4, Adaptable sewing ... machine brand and model5, SY is short for synchronizer ...