This new replacement front projector lamp CS-5JJ1B-1B1-ER from eReplacements is 100% compatible with your BenQ and is made with a high quality bulb inside a compatible housing. This lamp is user replaceable but you should refer to your projectorâÃÂÃÂÃÂÃÂs manual for replacement instructions for this lamp. eReplacements front projector lamps like this one come with a six month warranty and will meet or exceed the original BenQ lamp specifications because they are manufactured for high performance using top quality BenQ replacement bulbs and the most up to date safety and engineering control standards. Brand new high quality compatible replacement bulb manufactured in our ISO 9000 factories Plastic housing engineered to perfectly fit into your projector Internal safety features protect your device from electrical hazards