rokr 3d wooden puzzle clock - 166pcs self-assembly building model kit for adult -brain teaser educational engineering toy- gift for teens&adults (pendulum clock) rokr <b>detailed information:</b><br> ● package size: 357*235*46 mm <br> ● assembled size: 234*117*346 mm<br> ● wood pieces: 170 pcs<br> ● material:plywood、spring、axle<br> ● original design, first-class technology<br> ● great for diy lovers<br> ● excellent decoration <br> ● perfect gift for boys,adults,boyfriend,and dad<br> for optimal use,you should reed the instructions carefully, after several hours of assembly,you will get a 3d wooden puzzles clock mechanical model, glue is not needed.<br><br> <b>warning:</b><br> the product is only for people who ages over 14. children must assemble under the guidance of adults<br>use the wax inside to reduce the friction between wood board properly, the clock will run for 1-3 hours.<br><br> <b>notes:</b><br> ● stow the small parts carefully after removing them from the board in case of missing<br> ● remove and assemble the parts with care<br> ● polish the blurrs of the parts with sandpaper if needed<br> ● keep the manual well for future reference<br><br> <b>matainence:</b><br> ● keep the product away from the source of ignition and don't put it in humid place in case of the damage<br> ● use clean and soft fabric rather than chemical reagents like alcoholic, ammonia water, or window cleanser to clean the product<br><br> <b>about us:</b><br> ● excellent design and r & d team<br> ● high quality technology<br> ● intimate customer service<br> ● certificates (fsc, bsci, fama disney, en71-2-3, emc, astm-f963, en62115)<br> if you have any questions, please contact us timely and we will give you a satisfied solution. if you receive a wrong item, please ask customer service for exchange or return.