Essential LEDbulbs are compatible with existing fixtures with an E27 holder and are designed for retrofit replacement of incandescent, halogen and energy-saving bulbs. They deliver huge energy savings and minimum initial investment. It is a sustainable green light bulb to ensure direct replacement of GLS bulbs in indoor application. With the latest LED technology, Essential LED Bulb offers over 88% energy saving and lasts 8 to10 years (if lit 2.7 hours per day across 365 days) to save your total investment cost. From LED chips chosen to the final assembly, different kinds of professional quality control methods are adopted to guarantee the light quality consistency through product lifetime. The product is professionally designed to endure surge and environmental tests to make sure it can be adapted into different indoor application situations.