144 bright white LED bulbs; 100,000 hours of life; Intense and focused shadow-free illumination. The brightness of 0-100%Adjustable,high brightness; Variable intensity control; Power input: 100-240V, 50-60HZ. Our microscope accessories are made of high-quality materials to ensure durability and stability. Meet your various experimental needs. We promise to provide every customer with high-quality after-sales service. If you have any questions or need help, we will serve you wholeheartedly 24 hours a day.