Here is the link to the manual:https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/JT190199989-A1-LB%E5%88%86%E4%BD%93%28%E9%A3%8E%E5%86%B7%29%E8%AF%B4%E6%98%8E%E4%B9%A6-S%E9%A1%BA_1652270099292.pdf.<br/>
All of our products come with a one year warranty. If there is a problem with the product, we will provide you with repair advice by phone or email, or offer you a reshipment or refund.