... Internal constant currentDimension Φ60×H110mmMaterialCeramic + glass coverBeam angle 120° Lamp holder E27/B22Luminous flux 400-450 LMLuminous efficiency 80–85lm/WColor temperature ... , hotel, restaurant, school, station, warehouse, park .3. e27 LED bulb, decorative lighting (desk lamp, closet, down light source, pendant light source and ...