This is a small compact lamp (14 x 14 x 4 cm) and light (approx. 400 grams). It plugs into the mains, or its built-in battery (about 4 hours of charge for an hour of use). The instructions of use provided is clear and complete. Dun mat design, the lamp is very well finished, very easy to use: one button to turn it on, and two buttons to adjust the lighting power. The stand on which it rests is not very stable, but it is acceptable. I am the User everyday twenty minutes between 9 AM and 10 AM in the morning for 3 weeks and this does not cause me any stress I'm retired, but I think in an office, its use should not disturb your surroundings . Given its size and the fact that what is rechargeable, it can be taken everywhere (A storage pocket is provided). Regarding its effectiveness, I can hardly say I havent problem of depression, and sleep properly. Placebo effect can be, but I feel very active during the day since this lamp jOperation For those unfamiliar with light therapy and its positive effects against seasonal depression and sleep disorders, I would advise them to read the articles about it on the internet, den and talk to their doctor: his judgment will certainly be more accurate than mine.
