Specification Chain stitch, Normal embroidery, and sequins embroidery function, Auto lifting, Thread breakage detection Max. Speed Lock-Stitch: 700 rpm-800rpm; Chain stitch: 500 rpm; sequins speed: 600-800rpm. Alternate Head Selector Similar to the automatic color change accomplished by presetting for the multi-color standard embroidery head, switching between the lock-stitch chenille head and the multi-color standard embroidery head can be done automatically by presetting. This function is automatically linked with the X-axis, nipple, and take-up lever clutch drive to simplify elaborate mixed embroidery, which has conventionally been very time-consuming.