Specifications:
1) To be used on Epson Cartridge T0691-T0694, T0711-T0714
2) Offered with new vesion Combo Chip with Switch and Button
3) Can used without original Cartridge on with the Switch down
4) No need to remove the cartridge out to reset ink counter.
5) Easy setup for long-term usage
6) Designed to perform with maximum reliability, efficiency and ease of operation
7) Cuts the running costs of printers by 90% because the same ink tanks can be used over and over again