This bulb is ideal for replacing your existing incandescent or halogen bayonet bulb in fixtures that require an elongated single contact bulb. Unique, cutting edge, internal circuitry and the highest quality components make Dr. LED's the longest lasting, most energy efficient LED products on the market. This high-quality bulb produces a warm white light, and is the perfect way to reduce energy consumption on your boat. It has a long service life, is shock proof, and UV, lead and mercury-free. It produces a spot-type beam and is best used in directional light fixtures.