Vanquish 630w CMH All in One Grow System includes your choice of 3k or 4k bulbs. Features dual ports for linking/daisy chaining multiple units together. Compatible with other CMH units on the market for daisy chaining. If not specified, then 3k bulbs will be included. If a specific spectrum of either 3k or 4k bulbs are out of stock, then we will inform you of the shortage. Also includes both 120/240 plugs. Be sure to check out our Vanquish Master Light Controller that can control up to 200 lights (100 per group with 2 groups).