This is a 5 mm Blue Diffused LED
Features: Forward Voltage (RGB): (2.0, 3.2, 3.2)V. Max Forward Current (RGB): (20, 20, 20)mA. Max Luminosity (RGB): (2800, 6500, 1200)mcd.
Features: 25 RGB LEDs. Standard size - T1 3/4 5mm. 2800/6500/1200 mcd brightness. 2.0V/3.2V/3.2V forward drop. Max current 20mA.
These are 3 pin 5mm Red/Green Bi Colored LEDs.