Unique styling: this is a pure mechanical structure, no lubrication as bearings, when the gyroscope is rotating, the base of it can have a little shake; Note: Please be patient to the toy, which need to be wrapped with many rounds of rope, it would rotate stably when reach a certain speed; If you just wrap little round of rope, it would rotate slowly and unstably Great toy: it's force seems to defy gravity, it fascinate adult Good quality: adopt bright colorful metal frame, stainless steel shaft, gold-plated inertia flywheel Wonderful gift: help to learning the world, it is a funny and attractive gift Suitable for adult: it also can help kill time and help you relieve stress