The waterproof navigation signal light uses a 4V 1300mAh polycrystalline silicon solar panel to charge automatically during the day and illuminate at night with a very bright light. Dual mode lighting: It offers both steady and flashing modes, providing clear signaling in dark conditions to enhance safety and help prevent accidents. Easy maintenance: Built with a durable PC shell and longlasting LEDs, this marine navigation light delivers reliable, lowmaintenance performance for your boat. Versatile mounting: A detachable bracket secures objects up to 6 cm in diameter and fits sleeves with a 3 cm inner diameter, making it suitable as a bow light or stern light. Use scenarios: Nighttime coastal cruising: The light automatically charges by day and provides bright illumination at night, improving visibility and safety during docking or closequarters travel. Harbor or channel navigation: Use steady mode for continuous signaling when visibility is critical, or switch to flashing mode to attract attention in busy waterway traffic. Flexible installation on various vessels: The detachable bracket and sleevecompatible design allow quick mounting on rails or fittings up to 6 cm in diameter, enabling use as either a bow light or stern light on boats of different sizes and configurations.