Unique high-tech design speed cube: It can produce amazing blue light effect under dark atmospheric conditions. Before playing in the dark, it needs to absorb light and can absorb any kind of light. Leave it under the light for about 10 minutes. After absorbing light, it will glow in the dark Easy to turn and smooth to drive: The improved anti burst technology and structure can achieve extremely fast and smooth turning. Excellent hand feel, high fault tolerance and rounded corner design, perfect cube puzzle, suitable for playing in the dark Excellent intelligence game performance: this 3x3 speed cube puzzle game can be used as a traditional education method to cultivate children's logical relationship and thinking ability. For children or adults, they are a brain teaser The product is packed with single-layer cardboard. Although the product has passed the standard drop quality test, the damage caused by violent transportation cannot be excluded. Due to the particularity of fluorescent materials, the surface cloth cover is assembled on the main body. If it falls, please put it back, which will not affect the use.