Freecom FM-10 PRO USB-2 Stick 512MB, FM-10 Pro. Internal memory: 512 MB, Read speed: 24 MB/s, Write speed: 15 MB/s. Weight: 17 g. Data retention: 10 year(s). Bundled software: - Lock"n"go Professional Password Security & Encryption - Personal Media Suite. Input voltage: 4.4 - 5.5 V