Credit card USB 1. printing on 2 sides 2. memory: 512M-16G 3.SGS approved, 3-4 days lead time Credit card USB Advantage:1. Full color printing on 2 side, an excellent way for promotion of the company!2. Attractive outlook. Not only a gift , but a good way to advertise.3. Working as a USB flash drives, USB business card is Office necessities. High Exposure frequency, high promotion ability.4. ...