Metro Fulfillment House CF-001PB Healthsource 2-Way Brightness Sunlight Lamp with Extra Replacement Bulb Our Parabolic Light Diffuser design reduces eyestrain State of the Art Technology simulates the spectrum of indoor sunlight Our Flicker Elimination Technology design provides no-buzz operation and instant-on flicker-free illumination The flexible neck and brightness control lets you adjust the lighting to best suit your personal preferences and needs 2-way brightness and 1300 lumen free replacement bulb