SecurityIng 500 Lumens 4 Modes Headlight Waterproof Headlamp & Bicycle Light + 8.4V 6400mAh Battery Pack + Charger 1200 lumens Waterproof Headlamp and Bicycle Light. The headlamp is powerful, versatile, and water-resistant. With a maximum 1200 lumens output, this flashlight can throw a beam over 500 feet into the darkness. This Cree XM-L T6 Headlamp meets the criteria and goes even further. It included diffuser lens allows you to completely illuminate the immediate surrounding area. Activate the strobe function by turning the light on, and then pressing the button for around 3 seconds.