This is a promotional item from Suntory's canned coffee, Boss. It's a product from over 40 years ago. It's new and unused, but was opened once for the photos. The clock works, but the alarm function did not work. (The alarm setting hand doesn't move either.) Uses size D batteries. Box size: Height: 20cm Width: 15cm Depth: 7cm Although it is new/unused, it has been stored in a warehouse, so please purchase only if you understand this.