The K&M 12257 FlexLight Power Unit is a reliable mains adapter designed to provide continuous power to K&M FlexLight music stand lights, eliminating the need for batteries during rehearsals, performances or studio use. Compact and efficient, it delivers stable, noise-free power for consistent LED brightness, and is ideal for musicians who require long operating times or fixed installations. A practical, durable accessory, it ensures your FlexLight remains ready for professional use whenever you need dependable, uninterrupted illumination.