T-H Marine Extreme Underwater LED Light This T-H Marine Extreme Underwater LED Light is constructed of high impact polymer and is 20 brighter than the standard underwater LED light. Completely waterproof, it can be used both above and below water. A top choice among many, this Extreme Underwater LED Light is available in multiple colors and provides thermal and polarity protection. Features High Impact Polymer Construction Thermal Protection Polarity Protection Completely Waterproof For Use Abov