Expanded storage for tablets and smartphones.

Kingston’s DataTraveler® microDuo Flash drives provide additional storage in a small, convenient form factor for tablets and smartphones that support the USB OTG (On-The-Go) functionality. The USB OTG standard allows mobile devices to directly connect to supported USB devices.

You can see the specifications on Manufacuturer's web site here:
http://www.kingston.com/us/usb/personal_business#DTDUO3

DataTraveler microDuo Flash drives allow microUSB ports, often used for charging devices, to be used as expansion ports for additional storage. Ideal for storing large files while traveling, DTDUO gives plug-and-play functionality to tablets and smartphones without microSD ports at a lower price per GB than the extra built-in storage on a mobile device.

With smartphones and tablets recording HD video and taking higher resolution photos, space on these devices gets used up faster than ever. DTDUO Flash drives let users move files, photos, videos and more — without plugging into a PC1 - to offload or backup content. Sharing large files between mobile devices is easier than using online cloud services, and there’s no need for a cable to transfer data between the device and a PC.

• USB OTG (On-The-Go): A standard which enables host functionality in certain phones/tablets with microUSB ports, enabling connectivity to USB devices like Kingston’s DT microDuo2-in-1 MicroUSB and USB connectors for easy transfer of files between smartphones, tablets and computers
• Plug-and-Play: Simply connect as you would a standard USB Flash drive
• Convenient: Ultra-small, pocket-sized design for easy transportability
• Capacities: 16GB
• Speed: 16GB - 70MB/s read, 10MB/s writ
• Dimensions: 27.63mm x 16.46mm x 8.56mm
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -20°C to 85°C
• Operating System: Windows® 8.1, Windows 8, Windows 8 RT, Windows 7 (SP1), Windows Vista® (SP1, SP2), Mac OS X v.10.6.x+, Linux v.2.6.x+
• Compatible Devices: http://www.kingston.com/us/usb/otg