Item Type: Rotating Pen Material: Silicone, metal, acrylic, electronic components Size: Approx. 22.5 x 1.5cm / 8.9 x 0.6in Battery: 1.5V 43mAh LR41 6pcs Button battery (built in) (included) 1Stress Reduction: The rotating pen is a good choice for restless hands, it is a warm hearted accompany when you are tired of working or study. 2LED Pen: The rotating pen can not only reduce stress, but also can give out light, the LED will make the rotating pen more cool when it is rotating. 3Portable: With small size, the rotating pen is portable, and it can also attract attention and inspire careful consideration. 4Premium Collection: Every rotating pen is handmade, with LED and exquisite craftsmanship, it can be a nice collection. 5Premium Gift: It is the optimal choice as a surprising gift for friends and families in any occasions such as party, thanksgiving day, new year and cerem0ony, etc.Please note that the pen can not be used for writing.1 x Rotating Pen 1 x Storage Box