[Heart Circulation Model]: An excellent learning tool for observing the human heart and heart circulation phenomena, allowing children to have a preliminary understanding of the function and protection of the heart [Use]: Our scientific models are suitable for use as teaching aids, teaching supplies. [Early Education Toys]: A teaching tool for anyone in the field of education [Teaching Model]: Our educational tool for understanding the human heart. [Size]: 30cmx24.5cmx30cm/11.81inx9.65inx11.81inch Colour:White Material:plastic The actual product may have slight color difference or difference, which will not affect the use Package Contents: 1 * Heart Circulation Model Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.