Quantity: 10 pieces / Pack(2 Colors x 5pcs)Lens: 5mm Diameter / RoundEmitting Color: Red GreenForward Voltage / Current: 1.9V-2.1V(Red) 2.2-2.4V(Green) / 20mAPolarity: Anode (Longer Part) | Cathode (Shorter Part)These light-emitting diodes work well for a wide variety of applicationsIt is great for electronic and electrical experiments