eSmart Electric Shock Ball Game Novelty Gift for Party Please read warnings before use. The shock ball emits electric shocks. Not for kids under 14. The electric shocks may interfere with electrical devices such as pacemakers and other electronic health equipment. Do not use if you suffer from epilepsy, any kind of heart condition or other related illness. Note: After the battery is installed, please use the small blue tool to turn on the power switch.