Standard Treatment: 10-minute treatments at 16-24 inches from your device is optimal. 15-20 minutes for symptomatic areas may be beneficialHow Often: To get the most out of your treatments, consistency is key. recommends once daily use, although 2-3 times per day may be beneficial for symptomatic areas.Housing Material: AluminumDimension: 215*169*40mmVoltage: 85-265VACWattage: 50WLEDs QTY: 36 PCSFull spectrum: 660nm+850nmBeam Angle: 90°Dimmable: Red and NIRLife Span: 50,000 HoursCooling Fans: 1 fanEMF Emission: 0.0 µT @ 6"Power Factor: >0.95Product List:1x Host1x Eye coverNote:-Due to manual measurement, please allow slightly different sizes.-Due to the difference between light and screen, the color of the product may be slightly different from the picture.