Was only a little skeptical to order a such a 'no-Name'- flash, but at this price I simply times an attempt daring. Touted a TTL - Fully Dedicated thyristor automatic autofocus flash unit with swivel head for NIKON SLR autofocus cameras Guide Number (ISO 100) 36. The then does not provide such a system flash at such a low price the equivalent as a comparable system flash of the camera manufacturer should each consciously be. The case looks quite cheap. But the flash works very satisfactorily. Therefore, 4 stars for the extremely favorable part, although it certainly does not come from Ran quality and function at an original Nikon flash. This will cost but also many times over.