... Frame 4. 50,000h life span Product Description: 1. Super Thin Crystal Frame LED light box2. Transparent Borders, Exquisite Crystal3 ... 90 lm/w· Extreme long life: 50,000 hours· Maintenance-free: without needs to preserve· Available at most existing fixtures, easy ... to 3-year) warranty· Competitive low priceApplication 1. hotel bar, super market, business hall, image sign2. dinning room, subway station, ...