This LED replacement bulb can fit numerous boat and RV applications such as navigation lights, cabin lights, dome lights, tail lights, brake lights, reverse lights, turn signals or side marker lights. This 1156 single-contact bulb has 27 LEDs (Epistar 5050 SMD) that create a 360 viewing angle for better, allover light emission with reduced hot spots. Produces up to 320 lumens at 6200K. Tower-style design with a BA15S 15-mm bayonet base for easy plug-and-play installation just twist to lock in place. The energy-efficient bulb operates within a wide 10-30V DC range and is designed to last 30,000 hours on your motorhome or boat's 25 times longer than incandescence's.