eWorldlamp DELL 317-1135 725-10134 high quality Projector Lamp Original Bulb with housing Replacement for Dell R511J 4210X 4310WX 4610X Type: Projector Lamp high quality Original Bulb with Housing. Lamp Life: about 2000 hours Compatible Projector Model:Dell R511J 4210X 4310WX 4610X Express Fast shipping 150 days warranty