Delta Force HL-20 LED Headlamp is water resistant and impact resistant. The lightweight, comfortable design has a fully adjustable head band. The headlamp features a CREE XML-2 U2 LED and has a rechargeable 18650 Li-ION battery (included). Has six modes: Low, Medium-Low, Medium-High, High, Turbo High, Strobe, and S.O.S. Constructed from anodized aerospace aluminum, heavy duty polymer and robust elastic banding. Single button control for one-handed use. USB cable is included.