Please note that the sewing thickness is better no more than 1.8mm. UNIVERSAL USAGE - The mini sewing machine can be applicable to many material: fabrics, jeans, silk, clothing. It work by putting 4 AA batteries (batteries are NOT included, PLS BE SURE TO INSTALL THE BATTERY IN THE CORRECT DIRECTION) when travel or use USB cable (included) directly . SUITABLE FOR BEGGINER - There is a threading direction on the machine which helps you easily threading. And this item was designed with mini size and one stitching type which is not complicated but match the sewing demand. HANDHELD DESIGN - This handheld sewing machine is mini, portable and . Easy to carry and use. Whether you are a beginner or a professional in sewing, this universal sewing machine is friendly to you. - If you want to have fun in sewing, it may be a gift for yourself; If you want to make fun with your friends, it is perfect as a present. Enjoying your DIY time from having this sewing machine on.