Opteka EF-750 DG Super i-TTL Autofocus Dedicated Flash for Nikon D800, D7000, D5100, D5000, D3200, D3100, D3000, D700, D300s, D300, D3X and D3S Digital SLR Cameras Works on all Nikon digital SLR cameras Bounce capabilities in 5 steps up to 90 degrees; flash shooting distance range from 2 and up to 85 feet 35mm angle of coverage with Nikon digital SLR cameras Guide number (ISO100) 26(m)/85(ft) at 35mm Advanced 2nd generation flash technology, only compatible with rechargeable AA batteries (Lithium, Ni-cd & Ni-MH)