HB30 has become the most classical solar-powered LED Light in the field of marine aid to navigation around the world. Because of its self-contained, reliability and durability, it has also become a perfect model for all kinds of warning applications. It installs in minutes and requires no maintenance. The optical part is based on polycarbonate lens for better led transformation which can concentrate light to a small specific angel to meet 4nm visibility requirements. It complies with IALA-AISM's requirements. The service life can be guaranteed with more than 10 years by using the NiMH batteries.