This is an unused item. Please be sure to charge it with a charger that has a PSE mark and is rated at 【5V/2A or 9V/2A】. If you use a different charger, it may not charge. ※This product is USB-powered and therefore not subject to the "Electrical Appliance and Material Safety Law (PSE)". Please use your own power adapter with a PSE mark. Built-in battery, so it's cordless and ready to use immediately♪ 6-level temperature adjustment. You can make milk at your child's preferred temperature♪ Velcro allows for size adjustment! Can be used with baby bottles and canned milk!