T5 600mm lighting tubes(cold cathode): 1,50000hours lifespan, 2,2 years warranty 3,CE,RoHS T5 600mm lighting tubes(cold cathode): With the length of 300mm,600mm,900mm and 1200mm Technical Parameters: Power-----------------6W 8W 10W 12WInput voltage---------AC100V-130V/200V-240VLuminous efficiency-------60Lm/wPower factor-----------0.95Lifespan--------------50000Hours