High-Quality Lampwick - A+ quality lampwick with 280 Watts long-term stable light output - 4000-4500 hours long lifetime with only minor brightness degradation over the entire lifetime - Provides bright, clear pictures consistently Compatible Modules - Compatible with Epson ELPLP77 EB-1970W / EB-1975W / EB-1980WU / EB-1985WU / EB-4550 / EB-4650 / EB-4750W / EB-4770W / EB-4850WU / EB-4855WU / EB-4950WU / EB-4955WU - Compatible with H543A / H543B / H543C / H544A / H544B / H544C / H545A / H545B / H545C / H545M / H546A / H546B / H546C / H546M - Compatible with H563A / H563B / H563C / H619A / H619B / H619C / H620A / H620B / H620C / H621A / H621B / H621C - Compatible with H622A / H622B / H622C / H748A / H748B / H748C - Compatible with PowerLite 1975W / 1980WU / 1985WU / 4650 / 4750W / 4770W / 4855WU - Compatible with G5910 / HC 1440 / PC 1985 Convenient Installation - Includes a small parts set and detailed installation instructions - No special tools required and installation is straightforward - We include a pair of gloves to prevent the lamp from slipping during installation - If you have questions, our professional after-sales team is available to assist Quality Control - All lamps are tested before delivery to ensure performance and reliability - If the product is damaged in transit, we will resend a replacement to guarantee you receive a high-quality item Practical Applications - Classroom or conference room presentations requiring stable brightness and long lamp life - Home theater or small venue setups where reliable projection and minimal maintenance are important - Office training rooms or educational facilities that demand consistent image clarity and longevity