magnetic ballast: 1:wattage:35W 2:voltage:12V 3:defective rate:less than 1% 4:warranty: ... 18months magnetic ballast: Technical parameter:Remark: 12v/35w,12v/50w,24v/35w,24V/50W available Input voltage range: ... DC9-16V or DC9-32V L*W*H:90*78*30mmRemark: 12v/50w,12v/35w,24v/50w,24V/35W available12v ... life of light bulbs over 50% Super small,12V/35W,low defective rate,magnetic ballast