Chipresetter for CANON Printer Cartridges PGI-520BK / CLI-521 (for CANON PIXMA IP3600 IP4600 IP4700 MP540 MP550 MP560 MP620 MP630 MP640 MP980 MP990 MX860) (Office supplies & stationery)
Device is described in the article description, works flawlessly. Hopefully long since not clear how the battery can be exchanged.
