1、Adopt three US XML-T6 lamps with brightness up to 3,600lm and lifespan up to 100,000 hours. 2、Intelligent circuit control, four-level dimming circuit. One: one XML-T6 light, current output 0A, brightness up to 1200LM; Two: two XML-T6 lights, current output 0A, brightness up to 2400LM; Three: Three T6 are on at the same time, current output 6A, brightness up to 3600LM; Four: Burst flashing. Three T6 are on at the same time, current output 6A, brightness up to 3600LM. 3、Vacuum plated smooth cup, high temperature resistance, anti-shedding, good concentrating effect. 4、The shell is made of aerospace aluminum alloy, with CNC processing and anodic oxidation of the surface. 5、Equipped with 4 18650 batteries pack, with capacity of 6600MAH, DC voltage of 8.4V, and it can work continuously for 3-4 hours. 6、Equipped with elastic rubber headgear, suitable for all kinds of bicycles, easy to disassemble and replace. 1 x T6 Light4 x 18650 Batteries1 x US Charger2 x Fixing Rings1 x Light Band1 x Bag Item Type: Bicycle LightModel: XML-T6Material: Aluminum alloyColour: BlackBattery: 4x18650 or 6x18650EU: 100-240V