Quality assurance: UL listed, 3-year warranty, professional after-sales service
Spec.: Runs on 120/240V, 50/60Hz, 8ft 120V power cord
Watt option: 600w / 750w / 1000w / Super lumens (110%)
Protection system: Overheating protection, End-of-bulb-life protection, Short-circuit protection, Ignition-failure protection
Notice: Ballast should be the same watts as the bulb, or it may blow your bulbs. The extra setting is to adjust the brightness (lumen) of the bulb. Different lumens have different effect on the plants