Working hours: 3500-4500 hours Period: 180 days Bulb Type: Bulb with Housing Applicable models: Home Cinema 5040Ub, Home Cinema 4010 Home Cinema 5040Ube, Home Cinema 4000 Pro Cinema 4050, Pro Cinema 4040, V13H010L89 projector lamp performs the high definition pictures like you are at the cinema. Durable lamp life,more clear pictures makes you feel no negative effects on operating and matching your projector. With a economical and healthy conditon when you are using it. This is a lamp with housing, very easy and covenient for intalling. We also offer you simple intallation guide in our product detailed description. We always be here to assist you when you got any probems. Projector Lamp Description and Service: It is the lamp with housing, Same as bright and durable lamp wick as the original bulb. All our projector lamps have taken strict quality checks for beam performance, connections, voltages, and run-time, so you can trust it to work flawlessly in your projection. Furthermore, we will provide a 180-day of after service , If you have any technical, damaged, or other problem , we will try our best to help you. It is time to replace the lamp when: The projected image gets darker or starts to deteriorate. The lamp light is flashing orange. The message Replace the Lamp appears on the screen when the lamp comes on. To maintain projector brightness and image quality, replace the lamp as soon as possible. Do not reset the lamp timer if you have not replaced the lamp. If you do, the Lamp Hours will not accurately reflect the number of hours that the lamp has been used. Replace the lamp: 1.Turn off the projector and unplug the power cord. 2.Let the projector cool for at least an hour. The lamp is extremely hot immediately after use. 3.Loosen the lamp cover screw. Then slide the lamp cover off. 4.Loosen the two screws holding the lamp in place. 5.Hold the lamp as shown and pull it straight out. 6.Gently insert the new lamp. Then tighten its screws. 7.Replace the lamp cover, then tighten its screw.