350W UHB Lamp
The Christie 003-120483-01 replacement 350W UHB mercury arc lamp is user replaceable and is rated up to 3000 hours (typical).
The benefits of using a UHB lamp in this Christie projector are that it allows for a smaller and lighter projector (because the power supply is smaller and lighter), a cooler running, quieter, and less expensive-to-operate projector (because of the lower wattage) and longer lamp life (because the stresses on the lamp are reduced).