The Sandisk Ultra Dual 3.0 USB/micro USB OTG 256GB 3.0 Flash Drive is a sleek and powerful external drive designed for Android users. With a storage capacity of 256GB, this black thumb drive features dual-drive capabilities (USB 3.O and micro USB) and a removable USB port for added convenience. The USB 3.0 specification ensures fast transfer rates of up to 150 Mbps, making it perfect for storing and accessing large files on the go. This compact and efficient drive from SanDisk is a reliable choice for those in need of extra storage capacity for their mobile devices.