Nikon BC-7 Flash Unit. This compact flash unit slips into shoe on the Nikon F rewind knob and makes direct contact to the cordless synch terminal on the camera. Accessory PC synch cord and shoe adapter are available for use on other cameras. Accepts all-glass (AG-1) and miniature (M2/M5) flashbulbs in change-over socket. Has a tilting fan-fold reflector, bulb and circuit tester, bulb ejector and exposure guide. Boxed, with case and instructions.