The product is a genuine OKI B4300 Series Black Toner Cartridge 42102901, made in Japan and unopened. It is specifically designed for the OKI Data brand and is compatible with the OKI B4300 and B4600 models. As a laser print technology toner cartridge in black color, it ensures high-quality printing results for your documents and images. This authentic OKI product guarantees reliable and consistent performance for your printer needs.