The Ent Headlight is the solution when people need to deliver intense, shadow-free light into any body cavity. It must be used with the recommended Integra battery or with recommended Integra power cords with plugs inserted into properly grounded AC power outlets. It has lightweight design with occipital support for better ENT surgeon comfort during long surgeries. It allows physicians to perform exams and procedures. The Ent Headlight is very efficient and useful. They are easy to use.