This twin-beam bike light is bright! The Dual Blaze(R) 1500 utilizes two distinct beams of light to maximize lumen output and field of vision when you need to see the trail, path, or road. Two high ouput Nichia LEDs are powered by a Samsung 5000mAh lithium battery to deliver a whopping 1500 lumens of trail-blazing light. It's engineered with four settings so choose the power mode that best suits your cycling needs. We've added our famous Superflash strobe for daytime riding so vehicles are quick to notice you on the road from more than a half mile away even in peak daytime sun. - This twin-beam light provides 275 degrees of visibility while also delivering 1500 lumens - Nichia NVSW319BT high-powered LEDs provide high medium and low steady modes along with Superflash Day pattern - 3.5 hour charge time with included USB/USB mini