portable LED light therapy device for inflammatory acne removal, skin whitening, Portable PDT(LED) mACHINEModel:SL-900 Dear friends,This is Melissa,thanks for ... ≥4000mcd Sub-Panel NO.: 4 Spot Size: 73mm*190mm*4 LED Lamp NO.: 960 Temperature of the lamp panel: ≤40°c ... try my best to help you with any questions. Portable PDT (LED) machine