This muscle torso is designed to meet your high demands by showing the deep and superficial muscles in great anatomical detail. With the muscle torsos extraordinary accuracy and life size presence, this muscular masterpiece is a distinctive aid for anatomic demonstrations even in large lecture halls. Now included with all 3B Scientific Anatomy models is the 3B Smart Anatomy app. This app allows users to register their 3B item to extend the warranty from 3 to 5 years plus free 1 year access to the 3B Smart Anatomy app which includes 23 Anatomy lectures, 117 interactive models and 39 quizzes.