Features: Square shape design develops a gorgeous appearance with different colors. The smooth surface makes you feel comfortable, without hurting hands. Easy to carry, can be put into your pocket. Finger playing and table top spinning both work well. Spinning time up to 4mins. Effective for focus and deep thought. Great gift for quit smoking and other bad habits, relieves stress, anxiety and boredom. It was designed to be discreet and durable, perfect for using in offices, classrooms, or at home.