USB Stick of V7 that has a capacity of 4GB. Assuming that the average size for a photo, an MP3, and a Video is 2MB, 4MB, and 500MB respectively, then this USB can store approximately up to 2,000 photos, or 1,000 MP3s, or 8 Videos.
Its interface is USB 2.0. It is an older version, compatible with almost all devices but with slower data transfer speed (480Mbit/s) compared to newer versions.