From seeding to flowering, iPower Grow Light has your plant covered with all the light it will ever need. HID provides the most lumen per dollar, which means the most yields for your investment. This kit eliminates the need for mixing incandescent with fluorescent, or additional LEDs that provide little gains at 2 to 3 times the cost. The balanced spectrum set of lights will not only be well-absorbed by plant"s chlorophylls, but also promotes healthy chlorophyll production, and regulates plant life cycle.Package Includes: 1x 400W Dimmable electronic ballast support both HPS and MH Bulb 1x 400W Super HPS bulb 19" Aluminum Wing Reflector Pair of yo-yo hangers Below are description for each of the componentsElectronic Dimmable Digital Ballast * 120/240 V supported * Automatic Convertible: HPS & MH bulbs * Adjustable power settings: 50%, 75%, and 100% * Standard hydroponic "S" plug * 1x Heavy duty power cord (a 0 value FREE from us) * Open & Short Circuit Protection * Ignition Failure Protection * End-of-Bulb-Life Protection Super High Pressure Sodium Bulb * Higher lumen over regular HPS* Maximum power: 400w * Color temperature (K): 2,100 * Expected Life Span (Hr): 24,000 19" Aluminum Wing Reflector * Dimensions (L x W): 18.5" x 18.5" * Air-cooled * Socket material: ceramic * Socket type: mogul (E39) * Heavy duty 15" lamp cord * Standard hydroponics S-plug * Adjustable angle up to 180 degrees * Install Space Requirement (L x W x H): 21.25" x 18.5 " x 4.75" Adjustable Yo-Yo Hangars * Eyebolts for hanging the reflector * Up to 22 lbs weight load capacity per pair * Maximum Extension Length: 33 1/2"