Operating voltage: 110-130v/50/60Hz or 220-240v/50/60Hz Fluorescent tube diameter: 9mm Color temperature: 2700-6900k Color rendering index: >80 Power factor (PF): <0. 60 or >0. 98 Total harmonic distortion (THDI): >125% or <25% Lifetime: 6000-8000 Hours Measured according to IEC9698&969 standards Base available: E14/E26/E27/B22 Energy used(watts): 13W/15W/18W