... Hg,unbreakable,environment friendly,no flickerAPPLICATIONS:show case,counter,jewelry display,etcWARRANTY:2 years Other Parameter: 1. Operation Temperature: ... : ≥ 0.9 6. Brightness Decay: 3%-5% at 1000 hours 7. Luminous Efficiency: >80lm/W 8. Protection Rate: ... has a staff of professional product designers, practical electro circuit developers, experienced operating workers, production line is strictly ...