The Stern Navigation Signal Light, model CXH4-10B, is a robust and reliable lighting solution designed for maritime navigation. With a rated voltage accommodating DC 24V, AC 110V, and AC 220V, and a power range of 2*60W/2*65W, it is versatile for various ship electrical systems. The light utilizes an incandescent lamp, known for its warm glow, and offers a choice between white and yellow colors. The lamp holder type B22d ensures compatibility with standard marine bulbs. This model boasts a wide horizontal arc of 135 degrees and a vertical arc of +5 degrees, ensuring broad visibility. The light's visibility range extends to 3 nautical miles, and it is built to the IP55 protection class, signifying a high level of protection against environmental factors. The light's installation is facilitated by a seat-mounted type method, suitable for ships' stern sections, and it can operate in a wide range of ambient temperatures from -30C to +55C. The lamp body is constructed from durable steel, while the lamp shade is made from PC engineering plastic, available in red, green, yellow, or transparent colors, which is resistant to UV radiation and color fading. Weighing 9 kg, it is a substantial piece of equipment that promises endurance and reliability.