Description:<br>DIY Assembly Physical Kits: Electric Lie Detector<br>Come with unassembled parts and instruction: assemble the experiment by yourself<br>Working theory: Discover who&amp;#39;s telling the truth and who&amp;#39;s lying by measuring a person&amp;#39;s physiological changes, such as blood pressure, pulse, breathing, and skin .<br>An interesting liar detector game. It would be a great warm-up game at a party.<br>Trains children&amp;#39;s hands &amp;amp; eyes coordination, fine motor skills, stimulate observation &amp;amp; thinking abilities<br>Great &amp;amp; interesting physical educational toy, also good for parent-child interactive game<br>Material: Plastic<br>Specification:<br>Assembled Size: Approx 15 x 12 x 4 cm / 5.91 x 4.72 x 1.57 inch<br>Package Includes:<br>1 DIY Electric Lie Detector Kit (Includes Chinese Manual)<br>