... %-75%-100%-110%/Super LumensSaving Energy40%~50%Designed life for ballast6 YearsFactory Warranty2 YearsProtectionHot Start Protection, Short Circuit Protection ... , longer life time.400V 600w electronic ballasts offered by requests.For more products information, please feel free to contact us ... Sunkan Electronic Co.,LTD. 400V 600W electronic ballast for hydroponics/greenhouses,UL,CE,TUV,DIN approved