unused, Switchable (HPS/MH)： Brand: ： VIVOSUN ， Features: ： Dimmable. Switchable (HPS/MH)： Wattage: ： 1000W ， MPN: ： DB123B-10 ， 。, unless the item is handmade or was packaged by the manufacturer in non-retail packaging. unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store. such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitions ： Type: ： Digital ， Compatibility: ： HSP (High Pressure Sodium). MH (Metal Halide), ensures all ballast components are kept cool. MH --Optimized spectrum (Violet and Blue) and high PAR (Photosynthetic Active Radiation) toenhance vegetative growth.. Condition:： New: A brand-new, VIVOSUN 1000w Watt Dimmable Digital Electronic Grow Light Ballast w/ HPS MH Bulb. 1000w WattGrow Light Bulb Features Premium quality internal fan minimizes ballast temperature, Multi-Wattage.