The Strontium Nitro OTG USB 2.0 flash drives are small USB drives, that have a standard USB on one end and a micro-USB on the other end, so they can be accessed directly from a computer or any OTG-supported smartphones or tablets. It is used for data storage and transfer between OTG-compatible devices without cable. Our On-The-Go USB drives are the smallest OTG drives in the market currently.