Features: 1. Support 2 to 6 players to add atmospheres and joy to your party. Together with fast background noise, players determine who will be the next victim in a tense atmospheres 2. Note: the virtual electricity of the product does not cause any harm to the human body. Not suitable for patients who have a strong response to electric shock. 3. Durable Material: Our lie detector test device is made of high quality and environment protection plastic, safe and non-toxic, safe voltage. Powered by 3 AA batteries (not included), easy to use. 4. Great gift for family picnic holiday game birthday party drinking party It is a simple and fun party toy, let your party spend laughter5. If you have any question, please feel free to contact us. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement 3.People with high blood pressure, heart disease, etc. who are overly sensitive to current are not suitable for playing this game. 4.Our product shipment does not include batteries, please read the product information carefully before purchasing