Reduced wattage to replace standard incandescent bulbs for 33% longer life and 10 to 15% energy cost savings. Watt Misers, 34 to 135 watt, replace 40 to 150 watt standard bulbs. . 1,000 to 1,330 average life hours at 130 Volts; 2,600 to 3,500 average life h ours at 120 Volts.