This OTG USB drive is not only a memory stick, but has 3 connectors which make it compatible with pairing to a computer, iOS, and Android phones, available in 16gb, 32gb,64gb and 128gb.It is made from high-quality metal design which is very durable. Every connector has its own cover protecting them to get wet and get dust. It has a mini hole on the side which is very practical and convenient for easy storage.Very easy to use. Just plug and play for USB port. Open OTG function for Android and download iUSB for Apple gadgets.Perfect for business and school use.