Yosoo 8x8x8 3D LED DIY Cube Light Kit Squared White LED blue Ray The power supply voltage: 4.5 -- 5.5 V PCB size: 9.3 cm * 10.0 cm This light cube suite for DIY, production need some electronic basis and welding ability This LED CUBE8 light cube has eight layer, each layer ie consists of 8 * 8 = 64 pcs LED ,total 512 LED