Designed to do nothing but offer the best quality prints, the genuine Epson C13T37934010 is compatible with several printers in the Expression Photo range. Featuring a distinct squirrel on the front of the packaging it is easy to identify the magenta ink cartridge or any other colour in the Epson 378 range.If you print regularly, then you will naturally want the lowest cost per page from your inkjet printer, and the genuine Epson C13T37934010 is a perfect solution. The 9.3ml of magenta Claria Photo HD ink in this cartridge from the Epson 378XL range is estimated to last you for an incredible 830 prints.