EWOS BL-FP190B Replacement Projector Bare Lamp Bulb for OPTOMA Projector H180X/H181X/DS331/W311/X301/DX3246/DW326e/W301/DS311/S310/S311/X310/H111 High quality original bare bulb only This lamp can work about 2500-3000 Hours and 150 days warranty Compatibles model: for OPTOMA H180X H181X DS331 W311 X301 DX3246 DW326e W301 DS311 S310