-The LED light source consumes up to 85% less energy and lasts 10 times longer than incandescent bulbs.
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The light from this LED bulb feels as strong as the light from a traditional 48W incandescent bulb. Not dimmable. LED life time approx. 15.000 hours. Light colour: warm white (2700 Kelvin). Lights up directly when switched on. Use an opal light bulb if you have an ordinary lamp shade or lamp and want an even, diffused distribution of light. The light bulb can be used in temperatures from -20°C till +40°C.
The LED light source consumes up to 85% less energy and lasts 10 times longer than incandescent bulbs. http://www.ikea.com/hk/en/images/products/ryet-led-bulb-e-lumen-white__0538803_PE652182_S4.JPGRYET LED bulb E27 600 lumen, globe opal whitehttp://www.ikea.com/hk/en/catalog/products/50377731/503.777.31IKEA$59.9/ 2 pieces