DescriptionAre you looking for an educational and stress-relieving plaything for you and your friend? Our product can satisfy your needs. Relieve fatigue, so that you and your friend have a good mood every day. It can also work as an interactive gamer for friend and you.Features-Color:Black-Material:Metal-Size:8.00X8.00X0.80cm/3.14X3.14X0.31in- Made of metal which features with stability and durability, very hard and smooth for durable usage. - Fine workmanship, exquisite details, beautiful and retro appearance make it more attractive. - Easy to hold, with a finger either side of the center and then with your other hands turn. - Characteristic and exquisite with Constellation design. Simple and generous in design, smooth in lines. - Portable size, thereby relieving emotions and stress. It can exercise the fingers and eyes coordination ability.