Travel Inspira LLHI-CV1000-BC LED Desk Lamps Lights with Clamp-on Base Piano, Black

4 lighting modes-study mode (color temperature 5500k-6700k)brightest cool white light increases concentration-reading (color temperature 4500 k- 5000 k)cool white light stimulates concentration without eyestrain.-relax (color temperature 2700k-3700k)cozy warm light that implies a feeling of peace drives your pressure away.-sleep (color temperature 2700k-3300k)soft amber color light encourages a deep sleep. Tech features:-2 lamp bases for option --- 1 square lamp base and 1 clamp-on base-5-step brightness dimming control under each mode.-power: 11w-14w, voltage: ac100-220v, dc12v, 2000MA,-60min auto-off timer;-usb charging port.-cord length:58?; light head rotates 180? in x axis energy saving?-lifetime: 50000 hours under normal use. no bulb changing troubles-brightest setting output 530LM; maximum power consumption 14 watt, 75% less than incandescent lamp (55 watt).safety-unlike traditional florescent or halogen bulbs that produce hazardous heat, the lamp is warm and touchable after using for a long time.-the base is heavy enough to keep the light arm stable.-unique diffuser lens protection. totally glare free.-product warranty: 1 year. Package includes:- 1 x led multi-function lamp- 1 x square lamp base- 1 x clamp-on base- 1 x adapter-1 x cleaning cloth- 1 x quick installation guide.