New Era Toner &copy; - Chip Resetter for use in Epson T200 (T200XL120, T200XL220, T200XL320, T200XL420) Ink Cartridges for Expression XP-200, XP-300, XP-310, XP-400, XP-410 Part #: T200XL120, T200XL220, T200XL320, T200XL420 Package Contents: 1 New Era Toner  Chip Resetter Reset The Chip Before The Ink Level Shows: "X" Battery Operated