Overview: Eco-friendly Softech LED Desk/reading lamp that provides four (4) distinct light spectrums for stress free productivity, and does not contain any mercury or emit harmful UV radiation. Reading Mode : stimulates concentration & reduces eye strain with mid-range color (4300K-5300K) Study Mode : increases attention & concentration of high range color temperature (6000K-7000K) Relaxation Mode : promotes relaxation & improved mood with low-range color temperature (2500K-3300K) Bedtime Mode : encourages a deep sleep with comfortable soft light (2500K-3300K) This lamp uses 10watts or less of power to provide a superior light to that of a 100watt incandescent bulb, lasing more than 50,000 hours or 25 years in normal use. No bulb changing troubles anymore. It provides a Color Rendering Index light of 90+ (CRI) for a natural, sunlight type light for a healthy and enjoyable use. The use of natural light to regulate our body"s natural rhythm has been shown to improve mood, productivity and overall health. The Auto Off Timer allows an hour time before it automatically shuts off allowing bed time reading or room exit time. The USB charging port can charge your portable electronics including your iPod, mobile phone, MP3 player, etc. It is an irreplaceable lamp that will save you in energy cost and will pay for itself within the first 3-5 years. Customer Service Support Information : Customer Service Center is located in the state of Michigan: 2411 Oak Valley Dr. Ste 500, Ann Arbor, MI 48103 1-800-342-2704