The item is not covered by warranty (including 30-day no-reason return and 90-day return and refund service) Note: Please select the SKU (model number) corresponding to your product. If you don't see your model number above, please add a note of your massager model number at the checkout of the session before placing an order. If your product was purchased in 2019 or earlier, the new adapter you purchased may need a converter for connecting the massage products produced before 2019 and the adapter purchased after 2019. https://www.snailax.com/products/changeover-plugs-for-connecting-the-old-and-new-versions * You can find the product batch number on your series tag on the product. e.g. S18XXXX, the 18 means it is produced in 2018. Package Includes: 1 x home adapter Free Shipping On All Orders