Use the micro sonic grenade to prank your friends. Set the timer to 5, 30, or 60 seconds then hide or throw the grenade near your target. Stand back and watch as your victim is startled by the loud micro sonic grenade and then becomes annoyed trying to find the source of the noise. Truly hilarious! Siren is 110-115 decibels, about the loudness of a sandblaster or power saw. Continue reading


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