Bluemax 70w Desk Lamp (White) OPTICAL PERFORMANCE - Highest CRI of 96 CRI/5900 Kelvin. CONVENIENT - Fully functional desk lamp for reading, artwork, sewing and any type of work station application for ideal comfort. DIMMABLE - Fully dimmable from 100% to 20%. Uses naturally balanced light that simulates the sun's visible wavelengths and brings clear, glare-free light indoors. ENERGY - 70 watt full spectrum bulb produces 4,300 lumens, equal to a 300w halogen. EXCEPTIONAL - An excellent task lamp. Energy saving design uses 75% less energy.