The product is a high power AA battery pack with a case, compatible with Nikon cameras and flashes including SB11, SB24-28, SBDX, SB-800, and SB-900.

The brand of the product is Nikon and the model is SD-8A. It is designed to provide extended battery life and faster refresh for the compatible flashes.

Sale is final because I don't have any use for this and I am not a store