Stun grenade

A stun grenade is a type of explosive that doesn't have shrapnel or a flame. Instead, it makes a really loud noise and brightly flashes of light when it explodes. This can make people scared, confused, and temporarily unable to see or hear properly. That's why police and other law enforcement officers sometimes use stun grenades to control crowds or capture criminals. The loud sound and bright flashes can surprise suspects, allowing the police to take appropriate action.