Gikfun 4 Color 10mm Clear LED Light Lamp for Arduino (Pack of 20pcs) EK1045_ Emitted Colour : Green,Red,Blue,Orange Size: 10mm Lens Color : Water Clear 4 color each color 5 pcs Working current 20 (mA) Working voltage 3.0-3.4 (V) Power 0.06 (W) Size 10 (mm) Lens Color : Water Clear Chromogenic index 60-70 Emitted Colour : Green,Red,Blue,Orange DIY LED Projects School Science Experiments Car Decorations Electronic and Electrical Experiments Signal Indicator, including Arduino Projects,etc.