This is a wooden clock made from the rare Nagi wood. It runs on one AA battery, and the time is set manually. The second hand is silent. Nagi is considered a sacred tree, and has been revered for good luck since ancient times. It is rarely available as lumber. It features a very beautiful wood grain. The dimensions are 30cm by 30cm, with the corners cut at 5cm. Thickness: 1.5cm Weight: Approximately 700g It has been polished up to 600 grit, and coated with multiple layers of oil-based varnish, finished with fine compound and gloss wax. The surface is smooth and glossy. Please understand that this product is made from natural materials before purchasing. Please feel free to contact us with any other questions.