SanDisk Ultra USB 3.0 256 GB Pen Drive (SDDD3-256G-G46, Black, Silver)

From the manufacturer

SanDisk Ultra SDDD3-256G-G46 256 GB Pen Drives

The SanDisk Ultra Dual Drive m3.0 is compatible with Android smartphones and tablets featuring OTG USB support.Quickly free up space on your Android smartphone or tablet so you can take more pictures and videos.Sleek, retractable design offers both micro-USB and USB 3.0 connectors. The USB 3.0 connector is high-performance and backward-compatible with USB 2.0 ports.

Pendrive for Smartphone
USB 3.0 and microUSB Connectors
Super-fast transfer speeds from drive to computer
SanDisk Memory Zone app manages files