I received this as a baby shower gift, but I barely used it and kept it stored at home. Operation confirmed. Mr. Maria Miffy Bundle of Light Size: 7.5 x 7.7 x 15cm Material: Soft silicone (BPA-free) Battery: 3V button battery (CR2032) Size: 15cm Body only, batteries not included. Please note that it will be shipped without the box due to shipping costs.