ViSee LED Desk Lamp, Foldable, Rotatable, with 5 Level Brightness, USB Charging Port and LCD Display for Date, Time, and Temperature 35000 hours LED lifetime, minimum 12 years if using 8 hours per day, about 80% energy saving Folding and biaxial rotary design, easy to get best lighting angle Five level adjustable brightness modes allow you to customize your lighting as wish Flicker-free natural light, ease for eye. No mercury, No UV, No radiation, No noise Large LCD displays calendar, clock, actual time and temperature together with a USB port for cellphones