Automatic bobbin rewinding and two speeds selection. Portable size perfect for beginners first use. The Adapter was authenticated by UL to make sure safety. Also it supports the battery supply for outdoor use. Power supply and battery cannot be used at the same time or it will cause the machine to not work. Come with a foot pedal. You can do your sewing with both hands and control the speed with the foot pedal. Multifunctional home sewing machine with 12 stitches patterns perfect for many sewing projects and play your imagination. It is recommended to study the instructions in the package patiently before using it. Before children use it they must have experienced adults to help them study it.