4 x Eveready 120 Watt (150 Watt Equiv) R7s / J78 (78mm) Linear Eco Halogen Floodlight Bulb. These Eveready eco halogen energy saver R7s linear flood light bulbs use 120W but provide a light output of a standard 150W halogen light bulb, thus using 30% less energy and helping to cut your electricity usage / bill.