Ugears 3D mechanical Model Timer wooden puzzle for adults, teens and kids Eco Friendly DIY Craft Kit 3D SELF PROPELLED MODEL TIMER - UGEARS Timer is a unique mechanical 3D puzzle, which magically counts the time. Entertaining and fabulous craft that will create an atmosphere of fairy tale. MECHANICAL MIRACLE  Amazing wooden set, which dont need batteries to countdown. It is absolutely fascinating to see the true mechanical miracle coming to life in your hands. UNIQUE - extraordinary wooden timer, which can be set for 20 minutes. It will be the most unusual gift. Surprise your loved ones! Video will give you a quick overview of our model. ECO-FRIENDLY - made of 100% natural plywood without dyestuff and varnish, not treated with any harmful substances. You need no glue to put UGEARS models together; this kit includes everything you need. HIGH QUALITY GUARANTEED - Quality of our timer meets all standards, the whole set is thought out to the smallest details. Thats why all our customers are completely satisfied with the purchase, try it yourself!