This Sumikko Gurashi Tokage alarm clock has a very cute rounded design! You can set the time and alarm by opening the back. One battery is included. The alarm sound starts with: Pi, Pi Then gradually: Pi, Pi, Pi, Pi And finally: Pi, Pi, Pi, Pi, Pi, Pi, Pi, Pi, Pi, Pi The alarm gets faster and faster. *The alarm volume cannot be adjusted. Approximate measurements: Circumference: 53 cm Length and Width: 13 cm Height: 17 cm Please purchase this item if you agree to have it shipped in a cardboard box or paper bag.