The Niterider Lumina Dual 1800 Headlight Head Light is a LED set-up that produces a far-reaching beam pattern with extensive peripheral illumination. It is the ideal choice for any riding situation or terrain. The Dual emits an amazing 1800 lumens while in Boost Mode, making it one of the brightest self-contained bicycle lights available today. Simply double tap the power button to set the light to Boost Mode. When in Boost Mode, the power button will illuminate red and blue to notify the user at a glance. The Dual is also equipped with side lighting to increase your visibility day or night. Tested, meeting an IP64 rating; The Dual 1800 is designed to be used in a variety of riding conditions because of its high resistance to water and dust. Its high-strength Dupont Fiberglass reinforced nylon body casing and aluminum heat sink are engineered for extreme resistance to cracking and abrasion.