Easy to load and replace, see replacement instructions on pictures 1 box of 2 rolls of ribbon with RFID 1 roll of ribbon can print 45-48 sheets of ordinary A4 paper. Light in weight, suitable for mobile office and home printers. It is required to be stored in an environment of -5°C~45°C and 20%~85% humidity, avoiding high temperature and direct sunlight Valid for about 18 months