MF-18 Data Back: (2-MS76) For use with F3 series, with MD-4 motor drive attached. Data back with year/month/day, frame number or time (hr/m/s) imprinting. Number imprinting range from -2 to 2000. Information imprinted between the frames leaving the image unaffected. LED display, low battery warning, recording confirmation signal, manual ISO film speed setting, range: 25-400. Auto film stop leaving the leader out when used with the MD-4. Battery: 2- SR44.