Hydroplanet&Trade; Hydroponic 600 Watt HPS Mh Digital Dimmable 600w Electronic Ballast (600w) Automatically converts between HPS and MH Lamps Support dual voltage 120V/240V (120V cords included) Power Settings of 250W/400W/600Wand Super Lumens Allows 50 Hertz to 60 Hertz ETL Listed and CE Certified 2 years warranty any issue contact customer service with order ID