[Material]: EO grade environmental protection MDF (MDF) clock face is coated paper, board thickness: 5mm overall thickness: 5cm clock back wood grain color. 

[Core]: Silent movement 

[Size]: 12 inches in diameter 30cm 

[weight]: 550g [Package size]: 31*7*32cm   

Note: Please use a normal carbon battery! Do not use strong alkaline batteries, such as Supermaster, Nanfu, etc.! Otherwise it is easy to damage the movement!