Item Type: Finger Ballpoint Pen Material: Metal Battery Type: 3 x LR41 Button Batteries Battery Capacity: 120MAH (Shipped with Built in Battery) 1,With LED Light: Enhance your focus and relieve stress with this durable stress reducer ballpoint pen. The built in LED light adds a fun to the ballpoint pen. 2,Quality Material: Made from quality metal, this finger ballpoint pen is built to last. The sturdy construction ensures that it can withstand daily use. 3,Battery Powered LED Light: Anti anxiety rotating ballpoint pen is equipped with a built in LED light, which can be powered by three LR41 button batteries. 4,Portable and Convenient: LED rotating ballpoint pen is compact and lightweight, in addition to rotating, it can also be used as a regular pen for your daily writing needs. 5,Suitable for All Ages: Finger ballpoint pen is suitable for both children and adults. It is a great toy for kids and adults to improve their focus and concentration.Warm Tip: Children should play under adult supervision to avoid swallowing small toy parts. 1 x Stress Reducer Ballpoint Pen Note: 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.