1. Safe, Durable, and Long-lasting: Our E27 LED bulbs are constructed with high-quality aluminum, ensuring robust heat dissipation and minimal light decay. This design significantly extends the lifespan of the bulb, making it a reliable lighting solution that reduces the need for frequent replacements. Voltage: 85V-265V. 2. Various Wattage Options: Choose from a range of wattage options tailored to your lighting needs. The efficiency rating is high, with 1 watt producing 100 lumens; for example, the 10-watt bulb generates 1000 lumens, while the 30-watt bulb offers an impressive 3000 lumens. Select the wattage based on your desired brightness. 3. Simple Installation: Designed for easy installation, these E27 bulbs fit most standard household lamps effortlessly. Please be aware that these bulbs are not dimmable; using them with a dimmer switch may cause flickering or damage. 4. Versatile Applications: Perfect for both indoor and outdoor settings. For outdoor use, ensure they are placed under a lampshade. E27 LED bulbs are ideal for illuminating streets, warehouses, garages, gardens, homes, offices, hotels, hospitals, schools, clubs, shopping malls, meeting rooms, factories, light boxes, and backlighting. Experience reliable and efficient lighting solutions that meet a variety of needs without the hassle of frequent bulb replacements.