rokr 3d wooden puzzles clock - diy 168 pcs mechanical model kits for adults to build decorative gifts for teens/adults (zodiac wall clock) rokr rokr zodiac wall clock is a mechanical 3d wooden puzzle clock combined with decorative quality and pratical functions. it requires glue to assemble and battery to power it. once completed, it will be a pleasure to eyes. perfect gift for adults and kids at any occasion like birthday or christmas. <br> <b>specification:</b><br> pieces: 168 pcs<br> assembled size: 13.1x12x2.2 inches<br> bttery mode: aa battery (not included)<br> estimate time: 3.5 h<br> material: wood<br> <b>note:</b><br> 1.the 3d puzzle kit need to diy, waxing, polishing, gluing, assembling by yourself. the necessary tools are included with a clear english manual.<br> 2.please wax enough as instructed to keep the gears rotate smoothly. some parts may be fragile and need special attention when assembling.<br> 3. if you have any problem during assembly, such as parts missing or broken, we are glad to help unconditionally.<br>