Professional Photography Set of Elite Series Digital SLR AF Power Zoom E-TTL Flash for Nikon with LCD Display, Bounce/Swivel and Accessories Memory function / Power saving mode / Wireless trigger sensor / Bounce, swivel & auto power zoom head PC Synchronous Port, compatible with i-TTL flash automatically, multi-flash lighting applications (S1/S2 mode), front curtain synchronous Accurate brightness control / Automatic temperature detection High speed continuous shooting / Super Speed of charging recycle / Power ratio: 1/1 - 1/128 Five year manufacturer limited warranty