4U energy saving bulb 1). Wattage: 5W,7W,9W, 11W, 13W, ... ). Voltage: 12V DC 3). Base type:E14,E27,B22 Feature: 4U Energy Saving Lamp1).24/26/28/30/32/36W2).110 ... , daylight.9. Operating voltage: 220-240V/50Hz , 110-130V/60Hz 4U Energy Saving Lamp