Sandisk ultra dual usb drive may be small but it is very useful and relible.i useually connct with my micromax smartphone.
I bought it four month ago from our local showroom.i was looking a usb drive so came to a showroom in sahid nagar with friend and ask ed a salman to show a usb drive and he suggested me sandisk drive because of its reliability and I was convinced with its feature and I bought it.its price also reasonable.you can connect this drive with your any smartphone.you can transfer data quickly one device to this drive.when you connect it with your mobile you need to make sure the port is completely out.it is light weight and easy to use both in office and home.i also got warranty for 5 year on any defect.i recommend it.