This clock is composed of a lot of rings arranged in circular layout, thus forming a strong geometrical mark. - Raw material: the selection of the raw material was based on the principle to keep the natural appearance of the wood as much as possible - therefore plywood has been chosen, for it bears the wood grains still strong and thin enough. - Manufacturing process: the dial of this particular clock is laser cut from a single 6mm birch plywood board, then the finishing (polishing, painting) is made by hand. The dial is finally painted black. - The movement: is silent (non-ticking), second hand sweeps around. It runs with 1 pc AA type 1.5V battery (not included in the package). The white hands are made of plastic. Size options: Medium: (Ø)29cm, (H)3.3cm - Weight: 0.3kg Large: (Ø)41cm, (H)3.3cm - Weight: 0.5kg Extra Large: (Ø)59cm, (H)3.3cm - Weight: 0.8kg Colour(s): Black Material(s): Birch Plywood