Sunpak PZ40X Power Zoom Digital Flash for all Nikon TTL and D-TTL Cameras Shoe-mount electronic flash for Nikon TTL and D-TTL digital and film cameras Large, full-info, backlit LCD display for controlling and monitoring settings Power zoom-bounce flash head covers 35mm focal lengths (from 24 to 80mm) ISO guide number of 102 at 50mm zoom setting; tilt positions from 0 to straight up Silver and black finish; runs on 2 AA or NiMH batteries