Not as bright as the Happylight
Although the unit is advertised as 10000lux, it is not as bright as my Happy Light even on the 100% setting.  If you are in the market for a light therapy lamp, you want to make sure the there is an effective distance rating in addition to the "10000lux".  The Lux is a measurement of light intensity.  The farther you are away from the source, the less intense the light.  Therefore, you will want to know where is the "10000lux" being measured from the source.  Happy light is measured at 6 inches.  This unit does not tell you the measured distance thus beware of this before buying a unit.
Rating: 2 stars