The Energizer ENF-300N DSLR Flash for Nikon is a shoe-mounted flash unit compatible with Nikon i-TTL automatic metering. It is able to communicate with these cameras and automatically set the flash's power and zoom to match the lens' focal length. It also has good power with a guide number of 92' at ISO 100 and 50mm and features both 90° tilt and 270° swivel.
The flash has a zoom range of 28-85mm on full frame format for getting the best lighting possible as well as a recycle time of approximately 0.5 to 7 seconds. This allows you to take multiple flash photos in a row without having to wait too long between shots. Additional capabilities of this flash include front and rear curtain synchronization for more creative shooting and a red-eye reduction mode. The flash runs on 4 AA batteries.