Cocoweb 15 IN Black LED Battery Operated Grand Piano Clamp-On Adjustable Piano Light - Adjustable, Felt Lined, Cordless battery operated - GPLED50X Pre-Installed LED Technology keeps your light bright for over 50,000 hours without having to replace any bulbs The LEDs provide natural lighting with low heat to protect your piano Easy setup and install with multiple points of lighting adjustments Clamp on design to fit music boards between 3/8 inch to 1 1/2 inches 2-Year unconditional manufacturer warranty