SecurityIng 3 Modes Waterproof 4200LM 7X XM-L2 Temperature Control Special Design LED Bicycle Light Super Bright Bicycle Headlight LED Charging Lamp LED Bike Light with 8.4V 7800mAh Rechargeable Battery & Charger Consists of 7 x LED chips, this bicycle light's brightness is up to 4200Lm with a lighting distance of 860m.The mirror reflective cup can bring you high reflective effect with perfect facular. Made of aviation aluminum alloy with CNC machining, the surface is military regulation anodic and matte black oxide treatment with stainless steel pressure ring of head to protect LED light. It has high quality and durability with wear-resistance and corrosion resistance. The feature of temperature control if circuit board makes it outstanding to ensure a balanced heat of light. Easily install with the equipped fixed frame and fixed rubber rings. Temperature control function to ensure a balanced heat of light, makes it safe and comfortable to in the long time outdoor trip at night.