Oki's entire new line of printers is built to perform in environments as demanding as the Pentagon. The MICROLINE 400 Series impact printers provide a quantum leap forward in Impact Printer Performance. Each new impact printer in the MICROLINE series has been designed to lend unmatched reliability in the harshest of environments while remaining user friendly. They offer industry-leading 20,000 hours MTBF backed by a 3-year standard warranty* with warranty extensions up to 5 years. The ribbon life has also been increased to 4 million characters to further enhance productivity in the toughest printing environments.