HB60 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 or servicing for up to five years. It complies with IALA-AISM's requirements. This light has built in GPS module(optional), and several lights can synchronize at the same time.