5years of life 50000 hours,no flash,instant start,no flicker,no different sound,high efficiency ,energy saving up to70%or more Features:1:5years of spain life,5000hours.2:No flash,instant start3:No radio frequency interference4:High efficiency,energy saving up to 70% or more5:Costant current ,high efficiency (90%) wiht a new thermal protection within the drive,you can work under unstable voltage. ...