Solar LED String Lights Outdoor 25ft G40 Globe Patio Hanging Lights Waterproof 25+2 Spare Bulbs, Decorative Indoor/Outdoor Warm White for Backyard Garden Festoon Party LONGER LIFESPAN AND SAFETY: 20,000 hours life cycle, 10 times more than Tungsten bulb. IP64 Waterproof, safe even you touch the solar panel. SOLAR POWER ENERGY SAVING AND LIGHT SENSOR: Auto-turn on or turn off by light sensor technology. Auto charge during the day (A full charge takes 8 hours of sunlight), and it will auto turn on during night (can be used for 8 hours). DUAL CHARGING OPTIONS: 4400 mAh super large-capacity solar panel with USB charging port. 8 hours charging time for solar panel and 4 hours for USB charger.