Two flexible, independently dimmable LED heads Perfect for music stands, workstations, pedalboards, and more Evenly illuminates 2–3 sheets of music at once Warm, even coverage Optical-grade lenses provide accurate spread and color Delivers up to 40 lumens through four warm-white (3000k) LEDs Convenient clip clamps tight to music stands and more Get up to 15 hours of power from 3 AAA batteries (not included) Run continuously via USB — great for the pocketbook