Evolution Gerb 19mm 15S10 Aerial Shells (self contained)AirburstCombinationCometsCrossetteFalling CometsFallsFlares and Strobe FlaresFlash TraysGerbsJetsLaser CometsLine RocketsMinesMortar HitsSparkle Cannons/Cannon SimulatorSPD Bullet HitsTheatrical Flashes Aprox. 15 seconds 10ft/3 m 19 mm Silver Gerb, CE 0589-T1-0255 (IN) Safety Distance, 3 m radial, 5 m directional.