4U energy saving bulb 1). Wattage: 5W,7W,9W, 11W, 13W, 15W ... ). Voltage: 12V DC 3). Base type:E14,E27,B22 Feature: 4U Energy Saving Lamp1).24/26/28/30/32/36W2).110-130 ... especially where economical continuous lighting is needed3. Up to 75% energy saving.4. Ten times the lamp life of standard incandescent ... , daylight.9. Operating voltage: 220-240V/50Hz , 110-130V/60Hz 4U Energy Saving Lamp