Lang Fixation Cube features brightly colored pediatric test objects on four sides including: Red Car, Black Cat, Gray Elephant, and Red Sailboat. The fifth image, a Tumbling E within a bright yellow Star, is on top of the cube. Square handle allows you to switch the pictures rapidly and positively. The OS-700C, Lang Fixation Cube is simple, dependable and affordable. It fits easily in a shirt or coat pocket and makes a great child's fixation device.