A 500 Gram Foutain emits sparks from the top of the fireworks. Unlike an Aerial firework that shoots into the air. This category of 500 Gram Fountains will emit Sparks, pearls, whistle, scream, multi colors. These displays are large. Emitting sparks as high as 10 ft into the air. They last anywhere from 1.5 seconds up to 5 minutes. Great for that home grown driveway show.