MIGHTY BRIGHT / Xtra Flex Duet2 This music stand light is useful in dark places such as on stage. It's compact and easy to use! ■ Number of LEDs: 4 (white, with adjustable number of lights) ■ Brightness: 24 lumens ■ Battery life: 20 hours ■ Batteries used: 3 AAA batteries ■ Size: Overall length 345mm ■ Clip size: Width 40mm x Thickness 42mm x Length 75mm ■ Neck length: 220mm ■ Mountable width: Approximately 18mm