... 3.Average life:750hrs 4.Overall length:116mm 5.Base:Sfc10-4 dysprosium lamps Related Products:Order CodeBulbmmCurrent-PowerWTensionVLuminous Fluxlmavg.lifehrsColor ... price and reliable quality! HMI300W double-ended,long life hours,Sfc10-4,dysprosium lamps