Dinosaur Century Tyrannosaurus Rex T-Rex Battery Operated Toy Dinosaur Figure w/ Realistic Movement, Lights and Sounds (Colors May Vary) Requires 3 AA Batteries to run (not included; Best with Polaroid AA Batteries). Dinosaur Century Tyrannosaurus Rex T-Rex Battery Operated Toy Dinosaur Figure. Textured, Painted Body. Eyes, Tongue Light Up, Realistic Walking Action. Approx. Dimensions: Length: 19".