This clock was inspired by radioactivity - hence the name. The central core (the raw wood dial) symbolizes the atom that emits the particles all over the space. - Raw material: 6(+6)mm plywood - birch - Manufacturing process: laser cutting, sanding, hand painting, gluing / manual assembly - Colors: 3 shades of red / orange - Shape: sunburst / starburst - Dispaly: analog - Movement: is silent (non-ticking), - Hands: plastic (M, XL, XXL) / metal (L) - white - Battery requirement: 1pc AA (not included in the package) - Dimensions: diameter: M: 11.5 in / 29cm L: 16 in / 41cm XL: 23.5 in / 59cm XXL: 39 in / 98cm depth: 3.3cm / 1.25 in (all sizes) weight: M - 0.7 lb / 0.3kg, L - 1 lb / 0.45kg, XL - 2.2 lbs / 1kg, XXL - 5.5 lbs / 2.5kg - Production lead time: 2-4 days - Shipping: 3-7 days (ships for free) Please note: athough this product ships for free certain countries above certain product value may still charge customs duty / import tax on this product. In this case this fee is collected by the carrier! Feel free to request color customization on this product - in this case contact us before placing the order. Radium models require at least 3 colors for the 'rays'. Color customization is free of additional charge.