If you need a flash drive that can move data to and from your Android smartphone or tablet this is a device for you. The caveat is there appears to be only about 15 devices that the drive supports. If your device happens to be one of those that will work with it, it has a small micro-USB port on one side to connect directly to your device.
The other side of the flash drive has a normal USB connection that allows you to plug into your computer to transfer files between your two devices. It has 4 GB of internal storage and sells for about $24 in Japan. The performance is about 50MB/s for data writing.