A sparkler is a type of hand-held firework that burns slowly while emitting bright, colored sparks. It burns in high temperature (over 1000 °C), so it can be very dangerous.
Sparklers are particularly popular with children. In the United Kingdom, a sparkler is often used by children at bonfire and fireworks displays on Guy Fawkes Night, the fifth of November, and in the United States on Independence Day. They are called phuljhadi in Hindi and are especially popular during the Diwali festival.