High luminous efficiency: up to 110 lm/w for whole lamp. Patent technology:MCOB ( Multiple Chips Cups on Board ) packaging mode. Withstand high voltage up to 4500V. With intellectual property rights. Light weight around 460g only. Excellent in heat sink. Modularization design ensures the efficiency of heat emission. Environment friendly product: Do not contain mercury,lead and other harmful metals. No ultraviolet?No strobe,Its safe for human health. A highly efficient, long lasting, environmentally friendly, and inherently digital source of illumination - reinventing light itself as a highly controllable medium. Long serviceable life: In general,the serviceable life is more than 40,000 hours Specification: lamp holder:G13 beam angle:110 Luminous flux:Cool white : > 800 Lm/w Warm white : > 660 Lm/w Cool white : > 1600 Lm/w Warm white : > 1300 Lm/w Light Efficiency :Cool white : 90 Lm/w - 100 Lm/w Warm White : 80 Lm/w - 85 Lm/w Color temperature: Cool white : 6000 K - 6500 K Warm White : 2700 K - 3300 K Color rendering index Ra:> 70 Ra Casing material:PC + Airlines Die - Cast aluminum Light color:Warm white / Cool white Nominal voltage(product):Ac85 - 265V Dimensions: L ¡Á ¦µ:L: 600 mm ¡Á ¦µ: 26 mm L: 1200 mm ¡Á ¦µ: 26 mm Lifespan:3,0000 H.