... + 1 ballast + 2 bulbs(mh&hps)+ 1 yoyo + 1 timer Ballast Specs Power Output: Dimmable 50%, 75%, 100%Lumens: Up ... 86,000 , 140,000 Lumens RespectivelyCompatibility: Strikes both magnetic and digital ballasts ( ANSI Code: S51)Color Temperature: 2,000kBulb Base: ... 61,000 , 110,000 Lumens RespectivelyCompatibility: Strikes both magnetic and digital ballast (ANSI Code: M47)Color Temperature: 6,500KBulb Base: ...