The SunRay II has two light settings. Its moderate price has made it a very popular unit among the larger boxes. As recommended by leading researchers, the light is delivered at a downward angle for maximum effectiveness. The leg pieces of the desk stand are easily detached and reattached to the back of the unit for portability. Made in the USA, it comes with a five-year warranty on the light box and a two year guarantee on bulb. Energy efficient, it uses only 124 watts to run it’s full spectrum 5000k, 10,000 Lux bulbs. Spectrally transparent prismatic diffuser that blocks UV, does not filter the quality of light and will not yellow. No heat and no bulb flutter with advanced electronics. Advanced energy efficient electronics that do not overload the lamps. UL Approved.

The high setting (both switches turned on) provides 10,000 lux @ 23″; 5,000 lux @ 34″; or 2,500 lux @ 49″. The low setting (only one switch turned on) provides 10,000 lux @ 14″; 5,000 lux @ 24″; or 2,500 lux @ 36″.

Average use using the high setting (both switches on), the 10,000 lux distance is roughly 20-30 minutes per day at 23 inches away from the light of the unit. At 34 inches away from the face of the unit, that would be equivalent of 40 minutes to 1 hour. At 49 inches, the light might be used for 2-3 hours. On the low setting ( 1 switch on/1 switch off) the 10,000 lux distance is roughly 20-30 minutes per day at 14 inches away from the light of the unit. At 24 inches away from the face of the unit, that would be equivalent of 40 minutes to 1 hour. At 36 inches, the light might be used for 2-3 hours. Actual time for a particular individual will vary. It usually takes some experimentation to find a routine that is right for you.