Nikon MF-19 Data Back for Nikon F-501 / F-301 cameras Featured There is also a little

There is also a little window on the back of the camera with a striped flag that moves when you wind film on to confirm that film is indeed loaded correctly

Large LCD screen on the back

Supplied with f/1

Takes 4 x regular AA batteries

Slow-motion switch

Nikon MF-19 Data Back for Nikon F-501 / F-301 cameras Featured There is also a littleThis is very sophisticated data back that can do the following: Print either the year month day, month day year, day month year, or day hour minute in orange colored numbers on the slide or print. Print numbers from 000001 to 999999 Release the camera shutter at preselected intervals and allows for time lapse photography (an 'intervalometer'). 24 hour clock with alarm clock feather. In full working order.