Why should you settle for less at night than during the day? That's why the H4, thanks to its special lens technology, illuminates almost the entire human field of vision. You always have the essentials in sight and, thanks to peripheral vision, your surroundings as well. The H4 also offers various additional features, such as a swiveling lamp head, a rear light, and particularly high protection against dust and water, all in a compact design. What more could the eye want?.