This wooden tank is beneficial to cultivate children39s curiosity about science improve their creativity and exercise their handson ability Besides while playing kids can better understand how electrical energy changes into kinetic energy FeaturesFine quality wood material and exquisite workmanship provide it smooth surface and fashionable appearance kids will love it Selected topquality metal components ensure the best and stable performance 13*10*8 5cm mini size is convenient to store and carry Required wooden tank assembly process brings DIY fun makes kids fulfilled and trains their handon skills It inspires kids39 creativity and imagination and cultivates their abilities like concentration handeye coordination and pattern recognition At the same time they can learn energy transformation knowledge Recommend age the toy is fit for 714 years old kids Power supply it is powered by 2pcs AA batterynot included There is no better gift than this for children on their birthday children39s day etc Meanwhile it39s a great choice for decorations in living room study room etc SpecificationsName DIY Building Tank KitMaterial WoodAge Range 714 years oldBattery Not includedItem Size 13*10*8 5cm5 1*3 9*3 3inPackage Size 15*15*5cm5 9*5 9*2inItem Weight 115g4 1ozPackage Weight 120g4 2ozNoteDIY building tank kit only other accessories are not included Due to manual measurement there may be deviation Due to photograph light or other reasons the item in picture and material object may have slight difference please in kind prevail Packing List1 * DIY Building Tank Kit