Power saving cold cathode fluorecent lamps: 1,40% energy saving than normal T8 2,50,000hrs ... than incandescent lamp,40% energy saving than common energy saving lamps;- Long lifespan: 50,000Hours.if you using 8 hours per ... , school ,museum,hospital,hotel,conference room etc.Warranty: 3 years !!! : Power saving cold cathode fluorecent tube lamps