The dial of this clock is composed of a sequence of constantly increasing wooden frames, where each one is stuck in the next size while rotated 15 degrees. Each frame bites into the bigger one halfway. This gives the dial a strange whirl look - hence the name. The direction of the wood grains rotates together with the frame, and this gives a fascinating shading effect on the surface: some frames look lighter while others darker - however all the frames bear the same color (see the image: Whirl - right side). - Material: plywood (birch) - 6mm - Manufacturing process: the dial is made of 9 wooden frames that are laser cut from a single 6mm birch plywood, the frames stick into one another like marquetry pieces, the the finishing (polishing) is made by hand. The surface is oiled. - The movement: is silent - Battery requirement: 1pc. AA (not included in the package). - Hands: are plastic in black. - Dimensions: size: 29x29cm / 11" x 11" depth: 3,3cm / 1" weight: 0,4kg / 0.9lb - Production: 2-4 days - Shipping: ~1 week Please note: although this product ships for free you may still be charged for customs duty / import tax in certain countries above certain product value. In this case this fee is collected by the carrier!