About this item Provides 480 lumens of light immediately, with no waiting time to warm up to full brightness With a colour temperature of 2700 Kelvin, the bulb provides a warm white light, creating a comfortable atmosphere in any room The decorative ST64 LED bulb provides vintage flairideal for hanging ceiling light, chandeliers, wall sconces, table lamps, and other open-style light sources Specification. Wattage: 4 watts, 6 watts, 8 watts, 12 watts Light color: 1, clear glass / yellow light (3000K) 2, clear glass / white light (3000K) 3, gold glass / yellow light (2300K) Style: economic models, engineering models Material: glass Weight: 45g Color: transparent glass, golden glass Quantity: 2pcs The difference between [economic models] and [engineering models]: [Economic models] for the linear constant current 1-year warranty, more than 10,000 hours of life, the actual power for the nominal 80-90% between the luminous efficacy of 80-100 lumens / watt, camera photos under the strobe, but does not affect the normal use (the naked eye is not visible:) Engineering models] for 2 years warranty eye strobe-free, more than 20000 hours of life, the actual power for more than 90% of the full power, luminous efficacy of 120 lumens / watt or more, a standard energy efficiency, ultra-high brightness, long life, for a large brand quality standards, household recommendations to choose High bright engineering models