Improving upon our Duet and Duet2 designs, the DuoFlex Music Stand Light provides 40 lumens of dimmable and adjustable warm white light on two independently adjustable necks. The DuoFlex's precision engineered optical grade lenses are specifically designed to distribute a wide field of consistent lighting with no hard edges. The precision lenses work in conjunction with our High CRI LEDs (High Color Rendering Index LEDs) to provide better color rendering and even light output. Colors appear more vibrant and true, and with minimal optical distortion. The DuoFlex has two dimmable and adjustable LEDs on each head. These High CRI LEDs are rated for 100,000 hours and the unit can be powered by any standard micro USB cable (Mighty Bright Micro USB Cable included), or three AAA batteries (not included) for a typical battery life of 15 hours. The DuoFlex Music Stand Light is ideal for musicians, DJs, and engineers; in the studio, on the road, and for focused lighting during performances.