3528 white led diodes. 1. 0.5k/roll,1k/roll,1.5k/ ... :Model:SD3528WNColor:Warm white/Pure white/Cool whiteCCT:2800-3500K(warm white) 4500-6500K(pure white) 6500-12000K(cool white)Size: 3.5x2 ... Key pads advertising.3.Illumination and decoration (LED Tube,LED bar,LED module and LED strip,etc) Absolute Maximum Rating(Ta=25°C ... should not be done more than two times. 5mm led diode,3528 white Led diodes