Welcome to my store, I hope you have a great shopping experience here. We will keep updating a lot of new products, and there is definitely one for you. Item Name: Spinning Pen Power Supply: 3 x Button Batteries (Included) Features: Luminous, Symmetrical Design, Portable Size Details: Bare Pen Length: 22cm/8.66" (Approx.) Bare Pen Maximum Diameter: 1.5cm/0.59" (Approx.) Specifications: When rotating the pen, you can enhance the flexibility and coordination of your fingers, and help you relieve the boredom of work and life as well, so it is perfectly suitable for children and adults. This p[product is perfectly suitable for students, kids, children, etc. Spinning pen has symmetrical balance design and colorful lights, which is super cool and very popular among boys, office men, teens, college students, mental workers. It is made of high-quality acrylic , silicone and aluminum alloy material. The bare pen is 22cm long and has a maximum diameter of 1.5cm. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Spinning Pen