Detailed Product Description ItemSpecificationsTechModelGZHS3204DSPrint Head4 Seiko SPT510 heads/35plTechnologyDrop-On-Demand Piezo Inkjet Technology Output Resolution X:240dpi360dpiY:540dpi720dpi1440dpiMedia Clearance2mm~4mm Adjustable Head Height2mm~4mmInkOutdoor DurabilityMore than 2 year of outdoor lifeSolvent InkC,M,Y,K for SPT510,,,Ink Supply Negative Pressure Ink Supply System Monitor ...