Features:Lie Detector is a really fun toy to play with your friends, especially for truth party game.The polygraph has two kinds of punishment functions: Electric Shock or Vibration.Put tester's fingers on the sensing slots of the lie detector, it will punish the liar when his heartbeat speeds up.Made of high quality ABS material, durable in use.Powered by 3 x AA batteries (Not included), easy to use.Specification:Condition: Brand NewPower Supply: 3 x AA batteries (Not included)Product Size: 16*8cm / 6.3*3.1inPackage Weight: 316g (approx.)Package List:1 * Lie Detector Note: 1. The current generated by this product is harmless to human.2. Do not use in patients who strongly respond to electric shock.