Princeton Tec Tropic Pack Dive Light A Set Of Lights For Purists And Beginners Alike Shockwave Ii Uses A Dual Filament Xenon Bulb Ec 40 Is A Twist Bezel Handheld With A Rubber Overmold Eco Flare'S Flashing Red Led And Wide Angle Cone Create A Marker Light That Lasts Up To 500 Hours