Opteka EF-710 DG Super i-TTL Autofocus Dedicated Flash for Nikon D7000, D5100, D5000, D3200, D3100, D3000, D800, 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 72 feet 35mm angle of coverage with Nikon digital SLR cameras Operates on four AA batteries; fast 0.3-10 second recycling time Guide number (ISO100) 22(m)/72(ft) at 35mm