This SIMRAD 4FT HALO ANTENNA is a great addition to any boat's electronics and navigation system. With its high-quality construction and reliable performance, this antenna is sure to provide accurate and reliable signals for your radar and autopilot needs. The brand name Simrad is synonymous with excellence in marine electronics, and this antenna is no exception.Featuring a sleek and compact design, this antenna is easy to install and use. Its durable construction ensures that it will withstand the rigors of all types of marine environments. Whether you're out on the open water or navigating through narrow channels, this antenna will provide you with the information you need to make accurate and safe navigation decisions.