MK5 Thunderflash The MK5 Thunderflash is a single report (124 db @ 15 ft) Thunderflash device. Function/Operation is via a twist safety cap friction system, when lit the fuse burn time is 6 to 7 seconds so must be thrown immediately into a predetermined safe area. The MK5 construction is a thick cardboard tube which is fractured when fired giving off a light smoke output. Safety Distance - 5 Meters Fuse burn Time - 6 Second (+/-0.5 sec) Smoke Emission Time - N/A Sound Level (db) - Single bang at 15 feet - Maximum 124db Output - Light smoke Product motion from test point - See Fragment Zone Fragment Zone - Maximum 5 meters Destruction - Cardboard disc maybe blown from tube Safety Equipment - Please refer to Product MSDS & User instruction Product Dimensions - Height 152mm x Width 17mm The use of this product is intended for military / law enforcement / private security training and simulation / paintball & air-soft use and similar "war activities" . The use of this product requires eye protection, ear protection and gloves. Please refer to terms and conditions for product MSDS and Performance sheet.