LED Task Lights are efficient using much less energy than fluorescent or incandescent lamps. The LED Light Source stays cool and does not need changing. The LM-30 measures 12-1/2 inches and there is 1- 20 lb pull magnet that can be attached to any ferrous metal surface. The magnetic base is durable and holds lamp in place near your work for hands-free operation. LED Lamps have a 15 foot 18/2 SJT-UL cord, ergonomic shape, reflector lens focuses usable light where it is needed, hook for hanging if desired.