The design says it all, unobtrusive, durable, reliable with striking good looks. The Contour Anchor Light has the slimmest profile in the industry, a retractable locking base with a small footprint, simple 2-wire hookup and is constructed from durable composite plastic to reduce weight. 12" long and U.S. Coast Guard approved for 2 nautical miles. ABYC A-16:2016 compliant