This kind of lighting is very cheap. Released a nice little USB LED light by Elecom and he called â€œElecom ELESHININGâ€ with up to 400Lux brightness level, which is identical to the light of sunrise or sunset on a bright day. Elecom ELESHININGÂ USBLED light lamp is a great â€œreading lampâ€ to let you see yourÂ keyboardÂ laptop clearly to assist typing in the dark. USB LED light is just 57 grams in weight, with up to 40,000 hours of life span. Amazing really, to think a lamp could last for 4-5 years if you use it 24-hours non-stop.