LSE Lighting 3W UV UVC Lamp for use with 423502504291 Sonicare Sanitizer Brand: LSE Lighting Wattage: 3W Type: Ultraviolet Lighting for Toothbrush Models This UV replacement bulb by (LSE Lighting) brand is 100% compatible for use with 423502504291 Philips Sonicare models. All lamps listed are compatible brand (LSE Lighting) UV Lamps. We do not sell Philips brand lamps. All Philips brand names, trademarks and logos are property of Philips.