Lifetime is defined as the time at which the panel’s light output is reduced to 70% of its initial brightness, noted as L70 for most solid-state lighting products. This is not a hard failure, the way an incandescent bulb dies, but a metric based on reduced light output at constant current. Brite 3 products at nominal brightness are rated for 30K hours. At 3,000 cd/m2, a brightness level that is consistent with office lighting standards in the EU, lifetime extends to100K hours.