Epson Replacement Lamp for the Epson PowerLite S5 and 77C (V13H010L41) Dimensions are 0.75 Lbs (WxLxH) 2.0" x 3.0" x 3.0" It lasts up to 4000 Hours Compatible with Powerlite S5 and 77C Projectors It is Replacement Projector Lamp Ultra High Efficiency /UHE Lamp Replacement Projector Lamp For Powerlite S5 and 77C Projectors Ultra High Efficiency /UHE Lamp Lasts up to 4000 Hours 0.75 Lbs (WxLxH) 2.0" x 3.0" x 3.0"