[Size and weight of sewing machine] Net weight of sewing machine: 2.4KG, size: 12.2*5.9*11.8 inches, suitable for household use, such as remodeling clothing, hand-made, sewing home decoration and other sewing needs. [Sewing machine dual power and dual switch] Our sewing machine can be controlled by foot switch and button switch, whether you are a beginner or a sewing enthusiast, you can easily operate it, AC adapter and 4 AA batteries two power modes, battery mode is suitable for you to use when going out, remember not to use two power modes at the same time, otherwise the motor will be damaged. [Sewing Machine User Guide] There are threading indication marks printed on the body, which can help you easily thread the thread. Whether you are a beginner or a sewing enthusiast, please watch the use video carefully before using it, which can help you create works more easily. [Sewing machine 12 kinds of stitches and reverse stitching] Our household sewing machine has 12 kinds of stitches, 1-4 is the adjustment stitch length, 5/6 is the pattern stitch, 7/8 is the lock stitch, 9-12 is a curve stitch, just adjust the knob to the corresponding number, you can use the corresponding stitch. In reverse sewing, you need to keep pressing the reverse sewing switch to use the reverse sewing function. [Precautions for use of sewing machine] 1. The battery and AC adapter cannot be used at the same time. 2. Incorrect operation will cause jamming or broken needles, please watch the video carefully and read the instructions before use. 3. If you have any questions, please feel free to contact us.