product description: Sticker material: EVA foam (ethylene vinyl acetate) Clock material: metal, acrylic Hour hand: 31 cm / 12.4 ? Minute hands: 39 cm / 15.3 ? Clock machine: 12 cm / 4.9 ? Wall size: diameter 70 ~ 120cm ?Tips? The battery uses a No. 5 carbon battery (provided by the buyer). Do not use Nanfu, Duracell and rechargeable batteries, because these high-quality batteries have higher current output, which affects the movement life and sometimes even the accuracy of the travel time. . Use cheaper carbon batteries for wall clocks.