Epson C13T673598 (also known as Epson T6735 or 673 Light Cyan) is an original Light Cyan Ink Bottle, which is a specialized color used in Epson's six-color EcoTank (Ink Tank System) photo printers.
 
Provides finer control over blue and green tones, reducing the graininess and harshness often seen in light areas of photos when only using the standard Cyan ink.
Primarily for Epson photo EcoTank printers that use the six-color system, such as: L800, L805, L810, L850, and L1800.