This flash is very the original Nikon SB-910 similar to the outer and in the functionality. I tested him. With a Nikon D800E and a Nikon D7000 Even the original color filters of the Nikon SB-910 (Nikon SZ-2 TN, Nikon SZ-2 FL) can be put on a perfect fit. With full Eneloop batteries, the device is ready for use again after full power output by about 2 seconds. They are compatible with the Phottix Odin TTL triggers. Only the permanent light function of the TTL trigger, which I never need, work with this device, in contrast to the SB-910 does not. Because this flash can not be shipped to Austria, I can ship it to acquaintances in Germany. By sending there have been no problems. The flash I received is different from abgebiltet here labeled "Voking VK581" on the box was a "Neewer" sticker. Otherwise, as shown. If one looks at the * .com website of Amazon after "Voking VK591" find another device. Unbeatable price / performance ratio.