Description Daylight is an important part of a healthy lifestyle, improving mood, night time sleep and energy levels. Daylight helps restore the body\'s natural rhythms and brings nourishment to the body, mind and soul. In a market dominated by yellow bulbs, the Biobulb brings back daylight into the home, producing light of exceptional clarity. The Biobulb 25W Bayonet cap (B22) produces consistent, flicker-free light, and has been tested to last for up to 10,000 hours. Daylight and Colour Temperature Degrees Kelvin is the measure of colour temperature. The natural colour temperature of daylight is around 6500K. As a comparison, conventional energy saving bulbs emit light at around 2500-3000K. This yellow light can distort colours and can cause tired eyes and eye strain. The Biobulb has been tested to produce around 6400K, more than twice the average output of standard Energy Saving Bulbs. This is a clear white light which, like daylight, is easy on the eyes and prevents unnecessary eye strain, improving visibility and reading comfort. The excellent colour matching of the Biobulb make it ideal for use for designing, craft work, sewing or any other activity requiring good quality light. Energy-Saving Not only does the Biobulb produce light of exceptional clarity, it is also a Compact Fluorescent Energy Saving bulb. Using only 25W of electricity, the Biobulb produces a bright light equivalent to that of a 100W incandescent bulb. By using 75% less energy than a conventional bulb, you’ll be saving electricity and money, not to mention improving your carbon footprint. An ‘A’ rated energy efficient product, the Biobulb has been tested to last up to 10,000 hours.