NauticLED Bay15D LED Red. NauticLED is a high quality LED navigation lamp for port lamp applications. Features Bayonet indexed Internal 10-35VDC stabilizing driver Red Color Specifications Energy used: 2.4 Watt Equivalent to:25 Watt (halogen) Color:Red Light angle:360 Bulb base:Bay15D (index double contact bayonet) – 1157 Input voltage:10-35VDC, internal regulated Dimensions:18×37 mm Typically Suits Port navigation lights 40, 41, 42 and 55