1-year warranty for all kinds of products;The devices are maintenance-free,so never open them.The guarantee becomes void when you open the appliance.Only clean the outsite of the devices with a soft,dry cloth or a brush.Prior to cleaning,remove the devices from all voltage sources.If you find any defective accessories the first time,we will give you the new parts for free to replace in the next order,as an experienced manufacturer,you can rest assured of the quality and after-sales service.