The Xit XTSB800 Pro series digital DSLR dedicated flash features full i-TTL dedication for Nikon DSLR"s, zoom, bounce, swivel and a slave feature. It also has a wide angle diffusor as well as a reflection board attached. It has a guide # of 160 and a flash ready indicator in the viewfinder. It features an auto-focus infra-red assist beam and red eye reduction. It has a second/rear curtain synchronization. It takes 4 a batteries and has a 5 year limited warranty.