Features: Solar Powered: This LED bulb comes with a solar panel, allowing it to be charged by sunlight. With 6-8 hours of direct sunlight, the 1800mAh battery can be fully charged, providing long-lasting illumination. Indoor/Outdoor Use: With its long cable and IP65 waterproof rating, this LED bulb is suitable for both indoor and outdoor use. It can be used as a reliable lighting source for night markets, outdoor camping, and other outdoor activities. Essential Emergency Lighting: This solar-powered LED bulb is purposefully designed to provide essential illumination during power outages, ensuring safety and convenience in emergency situations. Adjustable Modes: With 5 adjustable working modes (high brightness, medium brightness, low brightness, SOS flashing, and auto light sensor mode), you can easily customize the lighting according to your needs. Timer Function: The LED bulb also features a timer function, allowing you to set it to automatically turn off after 30 minutes, 2 hours, 5 hours, or 10 hours. This is especially useful for conserving battery life and ensuring convenience.