Re-using parts from toner cartridges like the Lexmark X644H21E helps keep your printing habit more sustainable and reduces the overall running costs of your printer too. Containing both new Lexmark parts and compatible components designed to work with the X644H21E too, this remanufactured version offers the best of both worlds.Our remanufactured Lexmark X644H21E has the same 21,000 page estimated yield of a genuine one and remains compatible with printers like the X644E too. We fully guarantee the remanufactured Lexmark X644H21E making the purchase risk free and keeping you 100% satisfied.