This unique BioBulb is a 100% full spectrum daylight bulb that imitates natural sunlight with an AMAZING LIGHT OUTPUT OF 1750 LUMENS and uses 75% less energy in comparison to the standard halogen bulb.  BioBulbs are recommended  for sufferers of Seasonal Affective Disorder (SAD) and depression as the flicker-free natural white light helps to restore their natural equilibrium and may help improve your mood, daytime energy and night-time sleep. These bulbs also suitable for artists, photographers and craftsmen. 25 Watt equivalent to 100 Watt Up to 10,000 Hour Lamp Life   Colour Rendering Index of 85 Bayonet Cap (B22/BC)