Compatible Models: for ViewSonic PA500S PA500X PA502SE PA502XE PA503S PA503SE PA503SP PA503X PA503XE PA503XP PA550X PG603X PS500X PS501X PS600X VS16905 VS16909. ^^ 200W lamp power. 3500 hours/ 5000 hours (ECO) life. ^^ High brightness wicks equipped with high quality housings that effectively resist high temperatures. High quality light output and perfect picture. ^^ 200 days of technical support to customers. We will assist customers in troubleshooting any issues. We consistently offer customers practical service options. ^^ All electronics have the potential to malfunction. We are an experienced projector lamp service provider. If you have any product related problems, you can tell our technical team, we will provide you with a solution within 12 hours.