Check the listing for details. Mighty Bright DuoFlex Music Stand Light. Condition: New. Listed at 49.99 USD. Two Flexible, Independently Dimmable LED heads Add powerful, personal light to your music stand or pedalboard with the Mighty Bright DuoFlex. Two flexible heads give you even coverage for up to three sheets of music. A quartet of energy-efficient LEDs delivers 40 lumens of warm-white light through optical-grade lenses for accurate spread and color rendering. Sharing music with a buddy? Independent dimming for each head (three steps) dials in the perfect amount of personal light without blinding your neighbor or your audience. Long session? The DuoFlex gives you up to 15 hours of battery life over three AAAs (not included). And for more permanent installs, the DuoFlex's continuous USB charger and 100,000-hour LEDs give you lasting, cash-saving luminance.