Our portable amber navigation light (Towing Light) have been tested and certified by a U.S.C.G. laboratory and exceeds all U.S. Coast Guard specifications for marine navigation use. Navigation lights can operate on both 6 volt spring-type batteries or 12 volt rechargeable battery in a very durable watertight case.
Specifications:
    * Visibility exceeds 3 nautical miles for vessels 50 meters or more in length
    * Optically-correct lenses for the "ultimate" in photometrics
    * Lens has built-in screens for each light application
    * Candle lock-in feature locates filament in lens design position
      (makes bulbs replacement fast and accurate)!
    * Capable of operating on one to four spring terminal batteries
    * External stainless steel hardware throughout
    * Top case & name plate color coded for ease of installation
    * Up to 30 days sidelight usage with Ray-O-Vac 6V HDM batteries
    * Up to 160 days special flashing light usage with Ray-O-Vac 6V HDM batteries
    * Made in the United State of America