This product is navigation light bulb for boat, which is manufactured with glass material, witch is durable and the transparent glass cover has pretty good light transmission performance. It is perfect for yacht, rowing boat or ship sailing. Features - Material: Glass. - Light Color: Warm White. - Voltage: 24V. - Power: 40W. - Base: BAY15D. - ColorTransparent - The all-round light is an important piece of safety equipment on your boat and must be able to function in all weather conditions. - It can be use as bow light, stern light or running light, which can improve the safety when boating, especially at night. - Made with transparent glass cover, has good light transmission performance. - Suitable for most pontoon, yacht, touring car, fishing boat, boat and other boats. - Selected materials, not easy to age. Just connect and use, easy to use. Package list: 1 x lamp