Specification:

--For Epson printer, reset Epson 4880/7880/9880/7450/9450 etc. original chip and compatible one time use chip.

Feature:

--Can reset original chip or compatible single use chip.

--Don't always reset when ink volume shows 100%  and shows "0", this will make chip rocked or broken.

-- You'd better reset chip when there is about 10%-30% ink left. More safe.