Power (W): 50/60; Power factor: 0.9; Voltage (V): 100-277/120/220-240; CCT (K): 3000/4000/5700/6500; Luminous efficacy (lm/W): 90; CRI (Ra): 80; Life span (hrs): 25.000; Various options: - 1-CCT - 3-color changeable CCT (adjust by wall switch); Flicker-free; CE, KC certified, can apply for other standards as requirements; Warranty: 2 years; OEM accepted;