This cool 3-D Viewer features 21 Photos of 3-D Dinosaur images. This 4.5 inch viewer is compatible with other warm Fuzzy 3-D Viewers and disks. Press the lever to view each colorful photo. Use the focus adjustment function to see all the details. The set includes 3 disks. Suitable for ages 3 years and up. WARNING: CHOKING HAZARD -- Small parts. Not for children under 3 yrs.