Power (W): 20/30/60; Power factor: 0.5/0.7/0.9; Voltage/ (V): 100�·277/120/220�·240; CCT (K): 3000/4000/5000/5700/6500; Luminous efficacy (lm/W): 85/90/95/100; CRI (Ra): 80/90/Sunlike; Life span (hrs): 30,000; Flicker-free; CE, KC certified, can apply for other standards as requirements; Warranty: 2 years; OEM accepted;