Non-Invasive CVP: Mespere Venus 1000 Non-Invasive Central Venous Pressure - Includes adhesive patches, reference patches, and patch holders ** Please reference item #210427-0005-13 when contacting us about this listing. Return Policy Items are sold as-is as described and pictured. Most items come with a 7 day option to return and a 30 day limited parts warranty. Feel free to call before you buy. 888-649-6497