Light Seller&reg; 7W E27 White Color 6500K LED Emergency Light and Household Lighting Bulbs with More Than 4 Hours Emergency Lighting Time (KB-E27-7W) Standard E27 lamp base. Universal input voltage 90-260V AC. 7W light bulb. Doubles as emergency lighting device. With built-in rechargeable battery, this light bulb will remain light up for 4-5 hours in case of power outage. Uses energy-saving 3528 LED, high brightness long life span. Cool white color 6500K. Light body with aviation environmental protection PC material, excellent heat dissipation. Optical PMA shade, light transmission rate of 95%