Product parameter:<br />Attantion:<br />For the cover， we default to milky cover， if you want clear cover or stripped cover， please leave message.<br />In addition， we acquiesce in white(6000-6500K) color， if you want warm white or natural white， please leave message.<br />1.Length&wattage& led q'ty:       4ft      20W   96leds   <br />2.Input Voltage:                           AC100-277V<br />3.Power Factor:                           0.95<br />4.Luminous efficiency:                28Lm/ LED<br />5.Light effect (LM/W):                 110lm/W<br />6.Color Rendering Index:           >80Ra<br />7.Viewing Angle:                         170 degree<br />8.Lifespan:                                  50，000h<br />9.Tube Material:                        Aluminium alloy back+PC cover<br />10.Color Temperature:               Warm white: 3000k-3500K   <br />                                                   Natural white: 4000k-4500K <br />                                                   White: 6000k-6500k<br />11.Tube cover:                           clear /milky /stripped cover<br />Any questions，welcome to contact ! Thanks in advance.<br />