Kestrel Blue Ocean Megaphone Tan-Olive The Blue Ocean megaphone is the latest product developed by Nielsen Kellerman, the manufacturer of all Kestrel weather meters. Designed originally for the rowing industry, these megaphones have become extremely popular with military, fire and police departments and others who need to be heard by a large group of people. The Blue Ocean is the most durable, weather resistant bullhorn you will find. It was uniquely designed and carefully built to defy severe weather that commonly ruin other megaphones; corrosion, cracking, breaking and water damage. This megaphone is waterproof and actually floats if accidentally dropped in the water. The two handles on the Blue Ocean increases the durability, as well as make it easier to handle than the typical megaphone. Features: Waterproof and floats Rechargeable battery - no more money wasted on new batteries Removable bumper to customize look and add protection Optimal shape designed to deliver the loudest, clearest sound Siren and horn buttons Large dial volume and power buttons for easy adjustment and control Reliable, portable and easy to use Completely assembled in the USA.