Ge, lu70/cp, 70w, lucalox clear high pressure sodium high intensity discharge lamp, ed23.5 bulb shape, mogul base, mol=7.75", s62 ansi ballast type, 24,000+ hours, 6400 initial lumens, 1900 Kelvin color temperature, cri=22, 90% @ 50% of life lumen maintenance, universal burn position, for open or enclosed fixtures.