This is the hottest item of the year!!! The best novelty gift on the market. The strength and poopularity of all the other shock items has been exceeded with this product. Pit your reactions against upto 3 other challengers - its fastest finger first and the slowest finger get a shock. Push the start button and the light in the centre of the product flashes red for a random amount of time, once it changes to green all the challlengers must push the red trigger switch on their handle. The slowest person is the one who will get the shock!!! Fab for parties and any get together.