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 600W Dimmable electronic ballast 1x 600W Super HPS bulb 1x 600W MH bulb 1x 6" Cool Tube with Add-on Wings 1 Pair Heavy Duty Rope Ratchet 1x 24H Timer 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 $10 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: 600w * Color temperature (K): 2,100 * Expected Life Span (Hr): 24,000 Metal Halide Bulb * Maximum power: 600w * Color temp (K): 6,600 * Expected Life Span (Hr): 15,000 6" Cool Tube with Add-on Wings * 27" Long * Internal and external (wing) reflectors included * 15" built in heavy duty cord * Inline design to keep temperature low * Best for enclosed small growing area Heavy Duty Rope Ratchet * Hold Up to 150 lbs * Adjust the height of reflector easily * Maximum Extension Length: 6 Feet 24 Hour Timers * 24 hour adjustment, 15 min increments