BlueWater 19mm Push Button Switch - Off/On Momentary Contact - Blue/Red LED One Size. This button has an Nav/Anc" contact. The body design combined with the included gasket gives this button switch a waterproof rating of IP69K. At night every switch is backlit with blue LED light for unparalleled visibility. That light changes to red to let users know that the function is on without question. Package Contents: BlueWater Push Button Switch BlueWater 9057-2113-1: 19mm Push Button Switch - Off/On Momentary Contact - Blue/Red LED One Size