We received one HDM 13.3 monitor for repair some weeks ago. The hospital technician reported that the monitor did a perfect job for more than 27 years. Only a few maintenance checks were done in this very long period. We stopped producing the HDM 13.3 more than 10 years ago so that we couldn't bring the monitor back to life. Today, the hospital is using our HDM 29.2 because they know - Spiegelberg products are of very high quality and long-lasting. We used this case for an advertisement at the DGNC.