Want to be seen at your next tradeshow? Choose a circle shape flashing LED button! Each flashing blinky badge features an easy-to-use Tie-Tac butterfly backing. Batteries included and installed. The perfect promotional product for concerts, fundraisers, conventions, spirit nights, corporate events, amusement parks, speed dating and more. Magnetic connectors may be available upon specific request. Choking hazard. Not for children under 3 years.