BlueMax 42 Watt Full Spectrum Replacement Bulb Discover the Secret of Nature's own sunlight using a sophisticated full spectrum light bulb It produces comfortable and glare-free light which is excellent for reading, reduces eyestrain and also saves energy This full spectrum bulb uses much less energy than a regular incandescent bulb, yet produces as much light as a 200 watt halogen bulb This BlueMax replacement bulb is perfect for reading, sewing, close-up tasks, and reduces eyestrain especially for those over 40 It's a great bulb for anyone who wants to bring natural light into their home & helps your body-clock to get in tune with the daylight cycle