Rokinon D20AF-N D20AF Digital TTL Flash for Nikon (Black) Guide Number: 24m/75ft; TTL Auto Focus Zoom Position: 35mm; Bounce Position:0-digree/45-digree/60-digree/75-digree/90-digree Recycle Time: 0.3-10 sec; Recycle Time: 0.3-10 sec Power Saving Function Red Eye Reduction