LED GREEN: Pale Green diffused 5 mm half-round lens, 24 mcd at 20 milliamps over 24 degree half power angle, 48 degree viewing angle. Half-round means shaped roughly like a popsicle. Forward voltage 2.1-2.8 volts, wavelength 567 nm, spectral line half width 30 nm. This page lets you order 20 for $.60.