<Tr> <Th_colspan="2"> Stun grenade </Th> </Tr> <Tr> <Td_colspan="2"> M84 stun grenade </Td> </Tr> <Tr> <Th> Type </Th> <Td> Non-lethal explosive device </Td> </Tr> <P> A stun grenade, also known as a flash grenade, flashbang, thunderflash or sound bomb, is a non-lethal explosive device used to temporarily disorient an enemy's senses . It is designed to produce a blinding flash of light and an intensely loud "bang" of greater than 170 decibels (dB). It was first used by the British Army's SAS in the late 1970s . </P>

How long it takes for a grenade to explode