C.A.P. NextGen Digital 600w/ 400w Ballast - 90/260 volt Runs 400W or 600W M.H. or H..S. Bulbs Bulb can be run up to 65' from Ballast. Constant Lamp Voltage Prolongs Bulb Life 30% more Light than a Core and Coil Ballast. Universal Lamp Receptacle Fast Lamp Ignition: Cold lamp stars in less than 2 seconds. Hot lamp restart in less than 2 minutes Flicker-Free Operation. 90v-260v Input Voltage