High Quality NEW!!! Light source type: LED Switch type: Touch Weight: 1 lb Dimensions: 17 x 10 x 16 cm Brightness: 10,000 LUX at 5.5-6.5” Colour Temperature: 5500K Material: Plastic Operating Temperature: 10°C to 35°C Storage Temperature: 10°C to + 50°C Power Source: Two-Prong Corded Electric Rated input voltage adapter: 100-240VAC Lifespan: 50,000 hrs (LED lights are much longer than fluorescent bulbs) Portable Bright light to help beat the winter blues, circadian sleep disorders, shift work adjustment, & fatigue. FULL-SPECTRUM, WHITE LIGHT, UV FREE - Closely mimics the qualities of natural sunlight. ADJUSTABLE 3 LEVEL BRIGHTNESS - The lamp has 3 one-touch adjustable brightness settings, allowing for different levels of brightness.