U2 inkfinity SP4 blue ink 42 mm for semi-porous surfaces. Compatible with U2 mobile, smart & Pro-S. Prints 4 million characters with 3.6 mm height. Important tips to maintain inks: Remove the ink cartridge from the printer when it is not in use Close the ink bottle from the ink nozzle side with the designated cap Do not expose the ink to hot weather or exposure to the sun’s heat, which may damage the ink The ink should be kept in a cool dry place When the ink dries, you can refer to the manual or the video explaining how to treat temporary dryness.
