1. ) UL&CE listed 2.) 3 years warranty 3.) 100,000 working ... of our product-- induction lamp:(Ballast of induction lamp with UL,CE,FCC,EMC certificate) (1) Wide range power of induction ... 500W induction lamp. Other competitors's maximum power is only 300-400W induction lamp. (2) Wide Working temperature range (-40~40 ... % (after 2000hrs) (9) CCT: 2700~6500K magnetic Induction lamp with UL & CE