Stun grenades designed to produce a blinding flash of light of around 7 megacandela (Mcd) and an intensely loud "bang" of greater than 170 decibels (dB).[4] The flash temporarily activates all photoreceptor cells in the eye, blinding it for approximately five seconds. Afterward, victims perceive an afterimage which impairs their vision. The volume of the detonation also causes temporary deafness in the victim and disturbs the fluid in the ear, causing a loss of balance.
