Item Type: Glow in The Dark Gyroscope Toy Material: Acrylic, Metal Size: Approx. 48 x 14mm / 1.9 x 0.6in Purple Light Battery: 4 x Button Battery 40mAh LR41(Included) Package List 1 x Gyroscope Toy 3 x Glow in The Dark Beads 1 x Bearing 1 x Shaft Remover 1 x Purple Light (Accessories appearance color random) 1 x Storage Bag Warm Tip: Children should play under adult supervision to avoid swallowing small toy parts. 1Reduce Anxiety: Fingertip gyroscope toy is suitable for people with ADD and ADHD, release stress and anxiety, make people focused and thoughtful 2Dark Glowing: Anxiety relief fingertip gyroscope adopted luminous design, can glowing in the dark, which can effectively attract kids attention. 3Multifunction: Finger gyroscope is great for releasing anxiety, relaxing, staying awake, ADHD, attention deficit disorder, autism, and other attention disorder issues. 4Portable Size: Finger gyroscope toy is small in size and light in weight for easy to carry, which allow you can play the game in the office, at home, on the bus, etc. 5Durable Construction: Glow in the dark gyroscope toy made of acrylic and metal, long lasting and reliable, which can be used for a long time.